Maintenance reference

general

flash drives Q OpenELEC boot 9/2015 L OS X Lion boot W Raspberry Pi 2 (fully dedicated partitions) A [Cara] 32GB Windows 10 multi-version boot disk (25GB free); dinosaur+...; she wants argo C Ubuntu 15.10 desktop boot B openelec I Crucial M500 firmware flasher S toshiba msdos T tinywave 32GB lots of backups, star wars uncut blue/white 32GB - GoPro! U 8GB Ubuntu 15.10 Server 64-bit installer Y 2GB old photos red-on-black 1GB old msdos blue-on-black 4GB old photos D 2GB msdos found stuff P ABB 125MB empty X 4GB empty R 2GB homecoming 2014 playlist (returned) mellow mushroom GoT wolf 4GB need to add a 720p disney film!! PNY 16GB from bill, get it back to him!! master keyboard shortcuts map from .i3/config: # =============== # MDM KEY SUMMARY # =============== # 2015/11/06 first version # 2015/11/18 added misc section # # c-s-b ssh bitpost # c-s-c term: copy # c-s-d dolphin # c-s-e eclipse # c-s-g browser # c-s-j eclipse: keys # c-s-k edit this config file # c-s-n nautilus: new folder # c-s-r remote desktop # c-s-s subl, eclise, etc: save all # c-s-t thunderbird # c-s-u unity-control-center / control panel (win) # c-s-v term: paste # c-s-x term: cut # c-s-y next chromium window # c-s-z redo # c-s-6 sync all # c-s-7 sync config # c-s-8 sync pa # c-s-9 sync at # # == try to sync i3 + windows (+ mac) == # W-r run # F4 kill window # F5 refresh (many apps) # W-arrow move window # c-W-arr move to adjacent workspace # a-# go to workspace # # == coordinate with... == # c-s-n nautilus: new folder # c-s-j eclipse: keys # c-s-s subl, eclise, etc: save all # c-s-x term: cut # c-s-c term: copy # c-s-v term: paste # c-s-- browser: zoom out # c-- browser: zoom out # c-= browser: zoom in # c-s-+ browser: zoom in # c-0 browser: reset zoom # c-s-0 browser: reset zoom # c-w eclipse, chromium, nautilus, etc.: close tab/file # # == dev (chrome/FF, eclipse, vs, etc) == # F1 eclipse: project explorer # F2 go to bookmark # c-F2 set bookmark # F3 find next # s-F3 find prev # F6 debug # F7 run # F8 pause/resume # F9 save and build # F10 step over # F11 step into # s-F11 step out of # F12 browser: dev tools; eclipse: console (errors) # c-b toggle breakpoint # # == misc == # c-a-brk win remote desktop fullscreen toggle script favs COMMANDS WORTH REMEMBERING My scripts: sc show most-common quick-scripts greplogs blah search all my log files (named ToDo.txt) for "blah" greplogs blah -C 3 search all my log files (named ToDo.txt), and show 3 surrounding lines of context grepcode blah -C 3 same, but search code files underneath the current dir (h|hpp|cpp|pl|php) restart_process_as_needed.pl name=#path/file# checks for process named 'file'; if not found, starts path/file pk substring prompt to kill all processes with 'substring' General-purpose: cp -axv drive drive_backup clone an unmounted linux system ps ax|grep blah show running processes with "blah" in them lsof -c cp show open files for any process starting with "cp" lspci list all the hardware using the PCI bus (video cards, etc) watch #command# repeat the command every 2 secs (default), showing output tail -f #logfile# display the tail end of the logfile, in realtime shutdown -rF now reboot, forcing an fsck on startup (or, put a [forcefsck] file in drive root) fuser -m /dev/hdb1 find open files on a drive, then processes that have the file(s) open /dev/hdb1: 538 ps auxw|grep 538 donncha 538 0.4 2.7 219212 56792 ? SLl Feb11 11:25 rhythmbox wc -l file count lines - can pipe to it too find / -name "libjpeg*" brute-force find (in this case, all libraries starting with jpeg...) iostat -dx 5 report on drive % utilization etc ("emerge systat" to get it) iotop top for io, of course hdparm -t /dev/sda tests actual speed of hard drive Ubuntu-specific: xrandr --output DVI-I-2 --off && xrandr --output DVI-I-2 --auto --right-of DVI-I-1 fixes lost monitor, also try arandr sudo software-center [XXX.deb] to go to software center; specify a deb file to install (steam etc). sudo unity-control-center all settings; also a pathway to upgrading and selecting nvidia driver sudo lsb_release -a display the ubuntu version Gentoo-specific (see blog for USE flag notes): elogviewer X app to list installed packages including installation notes genlop -lu show the history of merged and unmerged packages eix #search# search for all packages (available AND installed) eix --world -c condensed list of all packages in your [world] emerge -Davu blah emerge package blah (if needed), confirming first dispatch-conf handles updating of config files after emerge, see /etc/dispatch-conf.conf equery uses #package# show USE flags of package equery depends #pkg# show packages that depend on package equery belongs #file# show the package to which the file belongs equery hasuse #flag# shows packages that have the USE flag equery depgraph --depth=# #pkg# shows the entire dependency tree for pkg eix-sync grabs latest package list, updates portage and eix (usually called via cron) emerge --emptytree --update world CAREFUL, this reinstalls EVERYTHING :> Apps: alsamixer set 7.1-channel HD audio volume levels alsa-config test, set optimal audio levels mythfilldatabase fill TV listings database For development: git rebase --hard HEAD throw away your local changes that have not yet been committed git rebase --hard master force the current branch to match master (losing ALL commits!) cvs history -c [file] get list of revisions for [file] cvs diff -r 1.2 [file] compare past revision to current cvs diff -r 1.3 -r 1.2 [file] compare two revisions Run sc to get the latest list: ----------------------------------------------- /^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\ ----------------------------------------------- useful commands and scripts _______________________________________________ \v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/^\v/ --------------------------------------------- i3[scriptname] run an i3-specific script equery files pkg show package files, use |less elogv[iewer] browse recent emerges and comments edit_fluxbox_menu edit and apply fb menu changes edit_firewall edit, restart iptables w/screen mdb-[] access db tools gtdm;gw;gd;gwa go to tdm|wimpy|dune|wally via ssh greplogs [term] search logs for term [-C 3] grepcode [term] search code in curr dir for term ds [dir] get directory sizes pk [proc_regex] kill matches - type ALL for -9 lsof -c [proc] show open files for process which|whereis app show app location|paths alsamixer adjust sound levels eq finally an eq in linux, yay! watch [command] repeatedly run command rs restore screen (w/detach) st;gt search/get torrents post_torrent run from m@wimpy:rrip/flac (or mp3) srd [#] show most recent downloads move_and_resymlink symlink destdir resymlink symlink destdir (if file is already there) rm_torrent.pl torrent cleanup; run for usage extract_tordir extract dir from .torrent ls_broken_symlinks uses curr dir ls_nonsymlinks uses curr dir rm_broken_symlinks uses curr dir, WILL rm THEM td;etd show/edit active todo w/cvs top top resource-consuming procs apachetop -f log site-specific apache requests ex;em emacs with/without X uc;cm cvs update/commit (no message) sp;ep search/edit private data edit_spam_[rules|settings] what it says edit_sieve_rules edit mailfilter rules tree -fid -L 1 great tree display of dir & files edit_torrent_[] shows (common) or rss (rare) search_xbmc_keys search key file for term edit_world edit portage master pkg list xscreensaver-demo then select Disable to turn off recordmydesktop does what it says bandwidth monitor current bw usage edit_rsync_jobs edit bp<->tdm nightly rsync trac-tda $1 $2 trac admin tool, RUN AS ROOT erase_trac_ticket_block 17 20 blah (run as root) update_ampache_tda update music catalog, RUN AS ROOT edit_gentoo_grub_cfg set up gentoo kernels on 3-boot htdj/*_scripts/push_release(.bat) get_ampache_official changes publish_hangthedj_ampache_module get_ampache_official changes cdh;huc;hcm;hpush scripts to manage hangthedj repos also see scripts/git_* helpers ec2-ubuntu-ssh ssh to amazon ec2 server mp3search search (and optionally copy mp3s Disabling xscreensaver emacs ~/.xscreensaver timeout: 12:00:00 # the max timeout is 12 hours crontab -e # So... I have .xscreensaver set to max delay (12 hours) # and I call this every ten hours to restart the idle timer. * */10 * * * /usr/bin/xscreensaver-command --deactivate >/dev/null linux software raid [mdraid] mdraid has not received the polish it needs to Just Work. It has serious flaws that after hours of learning, still leave you unsure and hanging and most likely bailing out of the entire process. But it is the best thing we have on the planet, so let’s distill it down to the essentials. check S.M.A.R.T. data of drives – run tests and make sure they are completely healthy! clean raid drives of superblock and partition data mdadm --misc --zero-superblock /dev/sdd && dd if=/dev/zero of=/dev/sdd bs=1M count=100 && mdadm --examine /dev/sdd mdadm: No md superblock detected on /dev/sdd. use whole drives (not drive partitions) in a newly created raid mdadm --create --verbose /dev/md0 --level=mirror --raid-devices=2 /dev/sdd /dev/sde mdadm: size set to 3906887488K mdadm: automatically enabling write-intent bitmap on large array Continue creating array? yes mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md0 started. watch -n 1 cat /proc/mdstat # wait 400 FUCKING MINUTES for a GODDAMNED EMPTY 4TB DRIVE to sync with ANOTHER empty 4TB drive, FUCKSAKE # IF YOU REBOOT BEFORE THAT, IT WILL BE AS IF YOU NEVER SET UP A RAID save and reboot and make sure the mdraid service restores the raid mdadm --detail --scan >>/etc/mdadm.conf rc-update add mdraid boot # start then stop then start the /etc/init.d/mdraid service, make sure this works to restore your raid (check /proc/mdstat) # format /dev/md0 as ext4 and set up an auto mount point in /etc/fstab # reboot and pray hopefully much later, upon failure, to restore a single drive, set it up as a raid: madadm -A /dev/sdd # I THINK! it's all very iffy. Which SUCKS. Test your drives - DO THIS OFTEN Look at available tests: smartctl -c /dev/sdf # to peek at available tests and how long they typically take to run Short test: smartctl -t short /dev/sdf watch -n 3 smartctl -l selftest /dev/sdf # you won't see anything until it finishes, takes about 1 minute Long test: smartctl -t long /dev/sdf watch -n 3 smartctl -l selftest /dev/sdf # takes about 5 minutes Adding a new drive (with testing) To add a new drive: ls /dev/sd* # and make note of what you have stuff the new drive in the SATA tower or plug it into a SATA socket ls /dev/sd* # you should now see something new, like [/dev/sdf] or do: cat /var/log/messages|grep sd # to see what it used fdisk looks good again... fdisk /dev/sdg p # to show what is there already, hopefully nothing (d if needed to delete existing partitions) n # new 1 # partition 1 <enter> # for default of 2048 <enter> # for default, end of drive w # write and quit format: mkfs.ext4 -m 0 /dev/sdf1 # the [-m 0] is very important; without it, goofy ext4 wastes 5% "saved for root" wtf mount /dev/sdf1 /somewhere # make sure it looks good! # install smartctl tools smartctl -c /dev/sdf # to peek at available tests and how long they typically take to run smartctl -t short /dev/sdf watch -n 3 smartctl -l selftest /dev/sdf # until success, takes about 1 minute # if you're feeling ambitious, rerun with [-t long] umount # we are NOT going to be manually mounting! we need to label the drive and put it in /etc/fstab e2label /dev/sdb1 box-type-sizename # what a stupid f'in name for that util emacs /etc/fstab - and put in an entry like this: /dev/disk/by-label/box-type-sizename /my-mount-location ext4 noatime 0 2 mount /my-mount-location # now it will be there when you reboot! but do this to get it NOW :-) Note that if you mount the new drive under /spiceflow, samba will already be serving it up, whoop! Adding a user to the server su - useradd #newuser# -m -G wheel(,etc) # Other possibilities (likely not needed): ## only needed if you want them to have their own group (otherwise use "users" group) #groupadd #newuser# ## the additional groups here are optional #useradd #newuser# -m -g #newuser# -G users,wheel,audio,video,games,dvd,usb -s /bin/bash ## Only needed if you didn't use [-m] option #mkdir /home/#newuser# #chown #newuser#:users /home/#newuser# passwd #newuser# # grant ssh access by adding to "AllowUsers" em /etc/ssh/sshd_config /etc/init.d/sshd restart # grant samba access to home folder # it's already set up in /etc/samba/smb.conf # but the user must be manually added to samba # use same pwd as before to sync them smbpasswd -a #newuser# /etc/init.d/samba restart # YOU PROBABLY HAVE TO RESTART ANY STUPID WINDOWS BOX before it will see things correctly! crazy # you can try this in Windows but it didn't work for me: # net use # net session \\samba.server.ip.address /delete Check disk speed To check SATA capability: bitpost ~ # hdparm -I /dev/disk/by-label/reservoir-3g-mel |grep -i speed * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Gen3 signaling speed (6.0Gb/s) To test read speed: bitpost ~ # hdparm -tT /dev/disk/by-label/reservoir-3g-mel /dev/disk/by-label/reservoir-3g-mel: Timing cached reads: 33760 MB in 2.00 seconds = 16900.70 MB/sec Timing buffered disk reads: 274 MB in 3.00 seconds = 91.28 MB/sec You can use dd to check speed, too: dd conv=fdatasync if=/dev/zero of=/spiceflow/newraid-4tb-bp/dd_test_output.dat bs=8k count=256k =256k 262144+0 records in 262144+0 records out 2147483648 bytes (2.1 GB) copied, 4.57219 s, 470 MB/s # don't forget to clean up.. rm /spiceflow/newraid-4tb-bp/dd_test_output.dat Back up a linux system to a second bootable drive Steps: We want to copy all files from the root drive to a new drive. We also want to update the boot menu to boot off the new drive. We also want to change /etc/fstab on the second drive to use the new root path. These are the steps for backup of the dune box to the /spiceflow/2.0tb-newmovies/ drive. When we're done, we'll boot from that drive to prove we have a working standby system. rsync does an excellent job of copying just what we need. Test it with this: # a (archive mode -rlptgoD) v (verbose) x (don't cross filesystems) h (human-readable) n (dry run) rsync -avxhn --progress / /spiceflow/2.0tb-newmovies/ Do the job with this: rsync -avxh / /spiceflow/2.0tb-newmovies/ sent 28.10G bytes received 8.64M bytes 15.63M bytes/sec total size is 39.57G speedup is 1.41 There was def some old stuff in there worth cleaning up: /home/m/development/svn/mythtv... /var/tmp xbmc log files etc Next we fix /etc/fstab on the new drive to use the drive as root. Original config: /dev/disk/by-label/d-g2-root / ext3 noatime 0 1 /dev/disk/by-label/d-sp-20newmovies /spiceflow/2.0tb-newmovies ext4 noatime 0 2 New config (remember tho, we lose the 2gb drive): /dev/disk/by-label/d-g2-root /root-hot-drive ext3 noatime 0 1 /dev/disk/by-label/d-sp-20newmovies / ext4 noatime 0 2 Note: this never worked out for me due to my system's mix of ext3 and ext4. I'll retry once I migrate everything to ext4. Next, grub: mount /boot em /boot/grub/menu.lst Orig entry: title ----- linux-2.6.34-gentoo-r11_withext4 root (hd0,0) kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/sda4 Add a new "standby" entry under it - do a "df" to find the root: title ----- ==STANDBY== linux-2.6.34-gentoo-r11_withext4 root (hd0,0) kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/hda1 Then reboot to standby and see what we have... (no "latest" video library etc., but otherwise the same?) Mount an IMG file You have to peek at the file with fdisk: fdisk -lu /home/m/bitpost/download/torrents/OpenELEC-Generic.x86_64-5.0.8-efi.img From that you can tell the "units" and "Start" offsets: Device Start End Sectors Size Type /home/m/bitpost/download/torrents/OpenELEC-Generic.x86_64-5.0.8-efi.img1 2048 526336 524289 256M Microsoft basic data /home/m/bitpost/download/torrents/OpenELEC-Generic.x86_64-5.0.8-efi.img2 528384 593920 65537 32M Linux filesystem From there you can mount with a little math. Multiply the units by Start to get offset (512x2048=1048576), and use it to mount that partition: mount -t auto -o loop,offset=1048576 /home/m/bitpost/download/torrents/OpenELEC-Generic.x86_64-5.0.8-efi.img /media/m/iso aifol

Ubuntu

Ubuntu 15.10 setup Throw Ubuntu on a USB stick following ubuntu instructions. Reboot, select to boot the thumb in BIOS, install, checking the [download as you go] and [install 3rd party stuff] boxes. Things to install ASAP: (everything, then see more detailed notes, below) sudo apt-get install i3 i3lock i3status suckless-tools dunst openssh-server cifs-utils smbclient synergy arandr ubuntu-restricted-extras exfat-fuse exfat-utils hfsprogs acpi gparted chromium-browser p7zip-full k4dirstat screen rxvt-unicode grdesktop openvpn bridge-utils nautilus-compare smartmontools git gimp if ubuntu forced grub as the boot manager, download the refind zip file, unpack, and (re)run ./install.sh. install i3 EITHER install i3 and i3 meta package through ubuntu: sudo software-center # then install i3 and i3 meta package OR do it yourself: sudo apt-get install i3 i3lock i3status suckless-tools dunst in .i3/config, set up nm-applet to run on login: exec --no-startup-id nm-applet in .i3/config, set up synergy to run on login: exec --no-startup-id synergy gsettings set org.gnome.desktop.background show-desktop-icons false # this disables the gnome desktop from opening when you run nautilus then logout from unity and log back in to i3 sudo apt-get install urxvt # for a terminal that we can control (float, set geometry) with i3 nvidia drivers open unity-control-panel AS ROOT: sudo unity-control-panel select Sofware and Updates select Additional Drivers tab, click nvidia (and Intel mobo, etc as needed) proprietary driver, Apply set up ssh sudo apt-get install openssh-server # default is ok but see /etc/ssh/sshd_config for details cd ~m/.ssh scp m@bitpost.com:/home/m/.ssh/authorized_keys . scp m@bitpost.com:/home/m/.ssh/id_rsa_3072_nopswd . ln -s id_rsa_3072_nopswd id_rsa as root, create /root/samba_credentials (copy it from another machine) set up scripts repo git clone ssh://bitpost.com/home/m/development/scripts cd && ln -s development/scripts scripts mkdir scripts/ubuntu/[new machine] set up config repo (remember we need files in git and symlinks to them from the system, YES THIS SUCKS, GIT!) verify_ubuntu_config_symlinks # we need to turn ALL THESE into SYMLINKS mkdir development && cd development git clone ssh://bitpost.com/home/m/development/config cd config # DO ALL THE FOLLOWING AT ONCE or your system will be fubar cp -r -p [wallee or whatever]/ubuntu [new machine]/ # be careful, this will need pruning/updating NOW cd && ln -s /home/m/development/config/[new machine]/ubuntu config cd && ln -s development/config/[new machine]/ubuntu/home/m/.bashrc .bashrc subl .bashrc # update PATH to include custom scripts folder in path cd .i3 && mv config config.backup && ln -s /home/m/development/config/common/home/m/.i3/config config # and press Mod+Shift+C to reload cd .gconf/apps/gnome-terminal/profiles/Default && mv %gconf.xml %gconf.xml.backup && ln -s /home/m/development/config/common/home/m/.gconf/apps/gnome-terminal/profiles/Default/%gconf.xml %gconf.xml # fix up fstab as/if needed su - cd /etc mv fstab /home/m/config/etc/fstab ln -s fstab /home/m/config/etc/fstab diff /etc/hosts /home/m/config/etc/hosts (most important: make sure correct hostname is being used) mv hosts /home/m/config/etc/hosts ln -s hosts /home/m/config/etc/hosts verify_ubuntu_config_symlinks # ALL THESE should now be SYMLINKS sudo apt-get install cifs-utils smbclient # and create /root/samba_credentials and all the samba /etc/fstab entries sudo apt-get install synergy # and configure it sudo apt-get install arandr # run to turn a monitor back on if it gets turned off during power cycling sudo apt-get install ubuntu-restricted-extras # for mp3s in firefox, etc. sudo apt-get install exfat-fuse exfat-utils # for access to modern exfat thumb drives (>4gb files) sudo apt-get install hfsprogs # if you want to access osx volumes sudo apt-get install acpi # for power management, so we can check battery level on laptop! sudo apt-get install gparted chromium-browser p7zip-full k4dirstat screen # more good tools sudo apt-get install nautilus-compare # then run nautilus-compare-preferences and pick kdiff3 for all sudo apt-get install smartmontools # use to test drive health with [smartctl] - DO IT OFTEN MAKE SURE to turn off stupid errors=mount in /etc/fstab if Ubuntu set it there # MDM GOD DAMN IT UBUNTU STOP FUCKING AROUND WITH remount-ro # UUID=6d51557a-1aaf-4594-8c28-f51a8730f63f / ext4 errors=remount-ro 0 1 UUID=6d51557a-1aaf-4594-8c28-f51a8730f63f / ext4 errors=continue 0 1 # download steam .deb file, [sudo software-center ~m/Downloads/.....deb] # set up firefox sync, make sure adblock is installed, etc. from a running terminal, set scrollback buffer to unlimited: Edit -> Profile Preferences -> Scrolling AWS | OpenVPN | RemoteDesktop sudo apt-get install grdesktop openvpn bridge-utils get a set of OpenVPN certificate files OpenVPN Desc OpenVPN files Config file (e.g.) m.gec.poweranalytics.io.conf User Certificate client.crt CA Certificate ca.crt Private Key client.key start a terminal as root, and start a VPN session: root@wallee:/home/m/development/power_analytics/docs/private/vpn/m.gec.poweranalytics.io-openvpn# openvpn --config m.gec.poweranalytics.io.conf This is available but more work, never bothered... sudo unity-control-center Click +, VPN, OpenVPN, Create... etc. Development setup # install android studio manually from zips into development folder install eclipse use the eclipse installer to install into development/eclipse folder (be careful not to install to eclipse/eclipse, if so just move and fix eclipse.ini) put ~m/development/eclipse/eclipse.ini into config run eclipse and create ~m/development/eclipse-workspace and select as default use shared eclipse settings, to avoid problems like this. see Development reference for Eclipse installation specifics install boost, see Development reference (everything) sudo apt-get install emacs build-essential automake libtool libssl-dev libbz2-dev python-dev curl libcurl4-openssl-dev php5-common php5-curl php5-cli php5-json php5-readline kdiff3 sqlite3 sqlitebrowser (or individually...) sudo apt-get install emacs sudo apt-get install build-essential automake libtool # for automake - build-essential may be there already sudo apt-get install libssl-dev # to get autotools "-lssl" to work sudo apt-get install libbz2-dev python-dev # used by boost sudo apt-get install curl libcurl4-openssl-dev php5-common php5-curl php5-cli php5-json php5-readline # for php with curl (for etrade PHP SDK etc) sudo apt-get install kdiff3 # will pull in a shit-ton of kde deps, i guess that's good sudo apt-get install sqlite3 sqlitebrowser sublime editor, WAY better than anything else out there on linux: sudo add-apt-repository ppa:webupd8team/sublime-text-3 sudo apt-get update sudo apt-get install sublime-text-installer git config --global core.editor "subl -n -w" # to use sublime with -n(ew window) and -w(ait for exit) install Node.js (see below) then you can install npm packages rad-scripts and mah-haus install Java (see below), then you can add to the Java stack as needed: play, sbt, activator... run setup_for_dev.node.js to pull down all active dev repos (in progress) hipchat hipshat sudo su echo "deb http://downloads.hipchat.com/linux/apt stable main" > /etc/apt/sources.list.d/atlassian-hipchat.list wget -O - https://www.hipchat.com/keys/hipchat-linux.key | apt-key add - apt-get update apt-get install hipchat Ubuntu Node.js * install Node.js using the "Node.js Version Manager" nvm details find the latest nvm version curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.29.0/install.sh | bash source ~/.profile nvm ls-remote nvm install 4.2.1 npm install -g express # to set the package manager to use a globally shared location nvm alias default stable (update .bashrc to configure node on even non-interactive shells - see another for example) also: nvm use 4.2.1; node -v; nvm ls; nvm alias default 0.11.13; nvm use default also: You can create an .nvmrc file containing version number in the project root directory and it will default to that version Ubuntu java Install Oracle JDK 8 (9 is scheduled for release in 2016) su - add-apt-repository ppa:webupd8team/java apt-get update apt-get install oracle-java8-installer apt-get install oracle-java8-set-default ctrl-D (back to user) update-alternatives --config java # make note of path update-alternatives --config javac # make note of path sudo subl /etc/environment JAVA_HOME="/usr/lib/jvm/java-8-oracle/jre/bin/java" # actually, use the path from above, of course Ubuntu i3 keybinding favs See config/wimpy/home/m/.i3/config - clone it! TODO move to common Ubuntu and shitty Seiki AMD Radeon driver sucks, won't go over 1080p; and Dune (AMD chipset) overscans so you can't see the edge. The only fix I found was to use xrandr. It kinda sucks though bc it's a resize solution that blurs all pixels. Cest la vie. xrandr --output HDMI-0 --set underscan on xrandr --output HDMI-0 --set "underscan hborder" 40 --set "underscan vborder" 22 Let's try the binary ATI driver. lspci -vvnn | grep VGA [...] Advanced Micro Devices, Inc. [AMD/ATI] RS780 [Radeon HD 3200] [1002:9610] nvidia For 4k video on an nvdia chipset (like wimpy), first get Ubuntu to use nvidia's driver: Go to System Settings-> Software & Updates Select the Additional Drivers tab Select the tested, proprietary NVIDIA binary driver REBOOT - the nvidia driver works at the kernel level so you won't be able to just restart X. fools WHY does ubuntu make you do all this? Next, here is the "magic super-secret" Seiki 4K goo that should go in xorg.conf (if needed). It's from: http://ubuntuforums.org/showthread.php?t=2164924 See /etc/X11/xorg.conf for the full details: # MDM added based on http://ubuntuforums.org/showthread.php?t=2164924 # Modeline "3840x2160" 307.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync # MDM 2015/02/12 A more recent one from: http://ubuntuforums.org/showthread.php?t=2164924&page=3&s=b53cb9ea1b751f4b9f2fe1aadfb6f43f Modeline "3840x2160" 296.70 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync Modeline "1920x1080" 297 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync To get a full output of what the hell X is doing: scite /var/log/Xorg.0.log & # Or create one if needed X -logverbose 6 :2 # this crashed my machine but did produce a log first scite /var/log/Xorg.2.log & Ubuntu repo management To see what repos Ubuntu is currently using: cat /etc/apt/sources.list Ubuntu upgrade from command line To update ubuntu from an i3 terminal: sudo apt-get update # Fetches the list of available updates sudo apt-get upgrade # Strictly upgrades the current package sudo apt-get dist-upgrade # Installs updates (new ones)

Raspberry Pi

Install Get a Raspbian image from here Create a boot MicroSD following this Use gnome-disks to expand the root partition to 16GB, and create a nice ExFat share on the rest if there is more space Boot it up and fix the locale with sudo locale-gen en_US en_US.UTF-8 sudo dpkg-reconfigure locales # USE THE SPACE TO SELECT US and unselect GB (fucked up keyboard) sudo dpkg-reconfigure keyboard-configuration # pick US or your keyboard is fubar # now you have to reboot - this is a disaster pi, fix it One-shot install of everything, then see more detailed notes, below... sudo apt-get install i3 i3lock i3status suckless-tools dunst openssh-server cifs-utils smbclient synergy arandr exfat-fuse exfat-utils hfsprogs gparted p7zip-full k4dirstat screen rxvt-unicode grdesktop openvpn bridge-utils kdiff3 nautilus-compare smartmontools automake libtool npm git Dev install goes pretty well too: sudo apt-get install emacs build-essential automake libtool libssl-dev libbz2-dev python-dev curl libcurl4-openssl-dev php5-common php5-curl php5-cli php5-json php5-readline sqlite3 sqlitebrowser Install node with Node Version Manager (nvm) exactly the same way as in ubuntu (see above). There is no chromium-browser, use epiphany-browser. You can go through a lot of the additional steps in the same way as on Ubuntu (to install Java, Sublime, eclipse, etc.)

OpenELEC

OpenELEC multi-boot install The easiest way is to add a new drive just for OpenElec and install OpenElec to it with the installer. But if you want to SHARE ONE DRIVE with other boots, DO NOT DO THAT :-) Do this instead: On an existing refind-booted system, set up two new ext4 partitions one about 2GB in size, labeled [SYSTEM], and marked as bootable the other with 10GB or more, labeled [STORAGE] prep the drives (no journal, ssd trim) download openelec and mount; there are a couple ways: get the img and install to a thumb get the img and mount (see below) Set up OE drives to mount in other OSes to /openelec-system and /openelec-storage /dev/disk/by-label/SYSTEM /openelec-system ext4 noatime 0 0 /dev/disk/by-label/STORAGE /openelec-storage ext4 noatime 0 0 copy target/KERNEL and target/SYSTEM to SYSTEM cp OpenELEC_img/target/KERNEL /openelec-system/ cp OpenELEC_img/target/SYSTEM /openelec-system/ set up UEFI boot subl /boot/efi/EFI/refind/refind.conf (and add this block) # MDM Trying this, from: http://openelec.tv/forum/64-installation/70783-how-to-efi-booting-openelec-on-new-pc-s-nuc-s # Only I had to change BOOT to SYSTEM. and quiet to debugging. menuentry OpenELEC { icon EFI/refind/icons/os_openelec.png volume SYSTEM ostype Linux loader KERNEL # options "boot=LABEL=SYSTEM disk=LABEL=STORAGE debugging" options "boot=LABEL=SYSTEM disk=LABEL=STORAGE quiet" } I THINK you need one or more of these too, not sure! cp target/boot/bootx64.efi /openelec-system/BOOT cp target/boot/bootx64.efi /boot/efi/EFI/ubuntu/ cp target/boot/bootx64.efi /boot/efi/EFI/ubuntu/ OpenELEC boot from thumb NOTE: I have the image already on a white stick with red lettering... anyway... Get the latest dev version (stable didn't work for me although this may change) dd it onto a thumb reboot and select to boot to the thumb in BIOS when the boot: line comes up, type "live" to get run a live Kodi rather than run the crufty old installer

gentoo
Chroot into gentoo from (say) ubuntu # These may already be done mount /mnt/gentoo cp -L /etc/resolv.conf /mnt/gentoo/etc/ mount -t proc none /mnt/gentoo/proc mount --rbind /dev /mnt/gentoo/dev chroot /mnt/gentoo /bin/bash # ** NOW IN CHROOT ** env-update source /etc/profile export PS1="(chroot) $PS1" # GET TO IT!  :-)

Windows

Windows 10 new setup Grep for Windows Create sublime symbolic links to preferences, typically here: C:\Users\Michael\AppData\Roaming\Sublime Text 3\Packages\User etc. Symbolic links (symlinks - needed for config files, svn overlay) i'm setting up hard links from sublime install folder to shared config settings: mklink [/H /D /J] link_path Target_file/folder_path We had to use a soft link, hard won't go across drives. And you have to run the cmd window as admin. Don't specify type, and it will create a soft file link: mklink "C:\Users\Michael\AppData\Roaming\Sublime Text 3\Packages\User\Default (Windows).sublime-keymap" "D:\Michael's Data\development\config\common\home\m\.config\sublime-text-3\Packages\User\Default (Windows).sublime-keymap" mklink "C:\Users\Michael\AppData\Roaming\Sublime Text 3\Packages\User\Preferences.sublime-settings" "D:\Michael's Data\development\config\common\home\m\.config\sublime-text-3\Packages\User\Preferences.sublime-settings" Here is another example, setting up a link in an SVN repo folder to point to a git-controlled folder on another drive. SVN is OK with this, cool. (open ADMIN cmd prompt) cd C:\CODE\QA\ContinuousIntegration\Trunk mklink /J scripts "D:\Michael's Data\development\power_analytics\scripts" Junction created for scripts <<===>> D:\Michael's Data\development\power_analytics\scripts Route traffic to avoid VPN You can use "route" to assign paths to specific traffic. So bitpost.com requests go through eth0 instead of VPN, eg... C:\WINDOWS\system32>route add 174.109.14.112 192.168.50.1 Note that you can do this with [route] in linux too, syntax is a bit diff.

Boxes

BOX: bitpost drives My primary server at Peace Street I had to stuff the goddamned drives right into the case since the rosewill was giving me such shit. In hindsight, it might not have been the rosewill at all... I am considering restuffing the box with the drives... but for now, i have this: sda root sdb1 tvmind sdc1 film sdd & sde softraid sdf1 spicey sdg1 reservoir sdh1 plethora sdi1 win Before it was like this: ================================ BAYS of the bitpost.com Rosewill ================================ To figure this stuff out, it was easiest to mount/umount drives and/or just access the mounted files (and watch the bay lights, of course) Disk layout: 8 7 6 5 4 3 2 1 1) spicey-3g-mel 2) reservoir-3g-mel 3) tvmind-4g-mel 4) newraid1-4tb-bp WD Black installed 2014-10-05 5) plethora-3tb-bp i hope this was not being used - 3GB Seagate barracuda - mount says some ntfs looking thing with no partitions and unable to mount - so i reformatted ext4 6) win-pax09 some old windows drive with lots of game goodies; also has sdf2 swap partition (kill it some day) 7) film-6tb-bp WD Green installed 2014-10-05 8) newraid2-4tb-bp WD Black installed 2014-10-05 ================================ Before THAT, it was this... 8 bay SATA tower houses these drives: 2.0tb archive (sdb right?) 250gb landofthelost circa ABB timeframe /dev/disk/by-label/LandOfTheLost /dev/sdc1 1.5tb raid drive #1 /dev/disk/by-label/d-sp-raid -> ../../sdd1 2.0tb latest /dev/disk/by-label/d-sp-20newmovies -> ../../sde1 1.5tb raid drive #2 (needs label change maybe) There are also these drive partitions: / /dev/sda4 ubuntu root ub_root -> ../../sda5 /vista /dev/sda3 rtorrent keys rtorrent CAN actually work pretty well, IF you pay attention to these basic keys: enter - specify a torrent file to load - USE TAB COMPLETION ctrl-d - STOP torrent, smack that shit, delete it forever ctrl-s - START torrent - WARNING ONLY WORKS IF YOU DISABLE TERMINAL CAPTURE with... stty stop undef stty start undef ctrl-o - change download dir ctrl-k - close files - needed before ctrl-o, usually ctrl-r - recheck hash NOW GET rutorrent going!  :-) rtorrent fix torrents that didn't move into place properly * if the torrent is archived properly, use move_and_resymlink to move it: cd ~/download/torrents/archived/symlinks move_and_resymlink [symlink] [destdir] if things are a mess due to hard drive failure (etc), you should do this: use r(u)torrent to see where rtorrent thinks the files are copy the files, if available, to the final destination (under a .* dir in symlinks) create a symlink: ln -s .music/Fresh/ELO-Secret\ Messages ELO-Secret\ Messages close the torrent files (ctrl-k), move the destination (ctrl-o), start again (ctrl-s) Updating mediawiki installation cd /var/www/localhost/htdocs/mediawiki emacs LocalSettings_redirector.php (to hardcode each site) php maintenance/update.php (repeat for each site) emacs LocalSettings_redirector.php (to reset dynamic behavior) Creating a new ssh key pair for no-password access to a remote system Say you've got a new machine with user [m] and you want to connect to it, do this: install sshd, make sure it's running get on the new machine - ssh to the new machine by typing the password if you don't have direct access $ scp m@tdm:.ssh/id_rsa .ssh/ $ scp m@tdm:.ssh/authorized_keys .ssh/ wow I just had serious issues with basic ssh usage, so i'll put a summary on the wiki basically most misunderstandings stem from describing these two: client: machine that is trying to ssh into the server server: machine that the client user wants to get to most poor sots are just sitting on the client and they create a pair and push their public key to the server but in my case, more often, i want to create a pair on the server and push the private key to the multiple places i need to connect FROM when doing that, you have to push the public key into the server's authorized_keys and configure the client to juggle multiple private keys create a key pair: ssh suser@server ssh-keygen use defaults will create: .ssh/id_rsa (private key) .ssh/id_rsa.pub (public key) put the public key in place: cd .ssh cat id_rsa.pub >>authorized_keys put the private key on the client and configure: scp id_rsa cuser@client:.ssh/id_rsa_server ssh cuser@client em .ssh/config Host tdm thedigitalmachine.com Hostname thedigitalmachine.com IdentityFile ~/.ssh/id_rsa User m Host server Hostname server.com IdentityFile ~/.ssh/id_rsa_server User suser all is full of light bitpost LAN IP addresses All IP address management happens on bitpost, via dnsmasq, which, rocks. Set up machine names in /etc/hosts Set up IP leases by MAC address in top of: /etc/dnsmasq.conf Initially set up bitpost with DHCP as follows: emacs /etc/conf.d/net config_eth0="dhcp" config_eth1="192.168.22.1/24" Turn DHCP-assigned IP into static as follows: /etc/init.d/net.eth0 restart dhcpcd[3867]: eth0: carrier acquired dhcpcd[3867]: DUID 00:01:00:01:1a:c3:6f:da:e0:3f:49:a3:4b:d9 dhcpcd[3867]: eth0: IAID 49:a3:4b:d9 dhcpcd[3867]: eth0: rebinding lease of 66.57.227.83 dhcpcd[3867]: eth0: leased 66.57.227.83 for 86400 seconds dhcpcd[3867]: eth0: adding route to 66.57.226.0/23 dhcpcd[3867]: eth0: adding default route via 66.57.226.1 emacs /etc/conf.d/net config_eth0="66.57.227.83/23" routes_eth0="default via 66.57.226.1" /etc/init.d/net.eth0 restart We will monitor and log success here to see how it goes. 2014/05/05 set to static 66.57.227.83/23, gateway 66.57.226.1 view dnsmasq IP leases cat /var/lib/misc/dnsmasq.leases Updating mediawiki installation cd /var/www/localhost/htdocs/mediawiki emacs LocalSettings_redirector.php (to hardcode each site) php maintenance/update.php (repeat for each site) emacs LocalSettings_redirector.php (to reset dynamic behavior) BOX: melange My primary dev box 90% ubuntu for development 10% gaming machine, has steam, low end half-height video card that works fine for Risk of Rain etc. It has a mid-range video card, enough to drive 1080p x 2 for development. This used to be the primary Kodi box up until 10/2015, should still be current. It has the same high-end i5 or i7 of other 2015 boxes, fast. drives /dev/sda contains ubuntu, kodi, windows - using ubuntu 90% of the time /dev/sdb melange_data formatted as exfat used gparted to remove existing partitions used gdisk to create an EFI partition table and an 8300 "linux file system" mkfs.exfat /dev/sdb1 exfatlabel /dev/sdb1 melange-data emacs /etc/fstab /dev/disk/by-label/melange-data /melange_data exfat noatime 0 0 BOX: wallee My 2009 MacbookPro 5.3 multi-boot laptop (see blog for multi-boot howto) Ubuntu Install all hardware-specific packages in one shot: sudo apt-get install firmware-b43-installer xserver-xorg-input-mtrack Post-install MUST-DOs: broadcom "b43" wifi driver: sudo apt-get install firmware-b43-installer (reboot) synaptic driver (for trackpad) sudo apt-get install xserver-xorg-input-mtrack # use synclient to determine what works best su - synclient -l # lists all params synclient PalmDetect=1 # temporarily change settings # save what you like, here: root@wallee:~# emacs /etc/X11/xorg.conf.d/60-synaptics.conf Windows 10 Upgraded existing Windows 8.1 Hack the INF file of the nvidia driver to get it to install - runs PERFECTLY TODO add details Add bluetooth stack - or not - i think i ended up back at the default Windows keyboard driver to get function key working: /spiceflow/softraid/software/OS/windows/macbook_windows10_drivers/AppleKeyboardInstaller64.exe Reset 1020 cable modem so it grants a real IP address (not private) Resetting things sometimes has to be done in this precise order: cable modem -> blue cable -> **ONBOARD** bitpost NIC LAN switch -> yellow cable -> **ADDON CARD** bitpost NIC power off bitpost and cable modem power up cable modem wait 5 minutes power up bitpost verify that you can ping google.com, LAN works, etc. BOX: case To install ubuntu, I had to add [... --- nomodeset] to the boot line in the grub booter. Then I had to use a desktop 1080p monitor - the 4k Sony would not come up for some reason. BOX: Raspberry Pi 2 and 4k You can override settings in /flash/config.txt; here's how, from here: mount -o remount,rw /flash nano /flash/config.txt # Make your changes, then ctrl+x to save. mount -o remount,ro /flash reboot Settings for 4k (from here)... disable_overscan=1 hdmi_ignore_edid=0xa5000080 hdmi_cvt 3840 2160 30 framebuffer_width=3840 framebuffer_height=2160 hdmi_group=2 hdmi_mode=87 hdmi_pixel_freq_limit=400000000 max_framebuffer_width=3840 max_framebuffer_height=2160 I couldn't get 4K to stick in OpenELEC tho (except for the splash screen(!))... Settings->System->System->Video->Refresh->30Hz Settings->System->System->Video->Resolution->3840x2160 (it won't come up, just drops back to 1080p.. just as well, video at 30fps sucks...) And to overclock the Pi 2 (from here): # OVERCLOCKING TO 1.1 GHz, EXTREME # default is 700 # this will NOT void the warranty :-) arm_freq=1000 sdram_freq=500 core_freq=500 over_voltage=6 temp_limit=80 #Will throttle to default clock speed if hit. # # there is also the "turbo" thingee (that "voids warranty", hot!!) #force_turbo=1 BOX: tdm My primary server that does just about everything internet-related P8P67LE mobo Intel i5 quad core names that are hosted: thedigitalmachine.com thedigitalage.org BOX: dune Follow the ubuntu install. We also use a StarTech AC600 ac wifi adapter. The chipset is specified here. It's a Realtek - RTL8811AU. It is not supported with the vanilla 15.04 kernel, but it's easy to build a module from sources available on github: sudo apt-get update sudo apt-get install linux-headers-generic build-essential git git clone https://github.com/gnab/rtl8812au.git cd ~/rtl8812au make sudo make install sudo modprobe 8812au Then, run NetworkManager and nm-applet, and as soon as you plug the USB dongle in and remove the wired connection, you'll get a running wifi applet, YES. We also want to drive the crappy Seiki at 4K. A 4k mode shows up in our X probe, but ubuntu is not picking it...... yet... OLD gentoo NOTES My XMBC media center and samba-based storage server AMD post-kernel tasks: make sure you update /etc/conf.d/modules for any new modules added update-modules module-rebuild populate module-rebuild rebuild (if you feel brave) module-rebuild list (if you want to do it manually) # NOTE: NO MORE ATI-DRIVERS they no longer support my old-ass onboard HD 3000 graphics chip # But the open-source radeon driver does, oh yeah! emerge lirc # etc emerge -a1 $(qlist -IC x11-drivers/) update-modules dispatch-conf # NO! eselect opengl set ati # aticonfig --ovt opengl # "no supported adapters"? eselect opengl set xorg-x11 reboot BOX: wimpy My main development workstation P8P67LE mobo Intel i5 quad core website drives and partitions: sda HDD, OLD OSes, need to wipe and reformat to ntfs; sda2 ntfs 1.1TB old?? sdb sdb1 fat32 300MB wimpy-efi sdb2 ntfs 147GB windows10??? sdb3 fat32 287MB /boot/efi sdb4 linux-swap 7GB sdb5 ext4 wimpy-ubuntu-ssd 216GB sdb6 ext4 wimpy-gentoo-ssd 54GB sdb7 ext4 wimpy-openelec 19GB sdb9 fat32 "boot, esp" check in windows: wmic baseboard get product,Manufacturer,version,serialnumber boot is in /ubuntu/boot grub menu: /ubuntu/boot/grub/menu.lst post-kernel tasks: make sure you update /etc/conf.d/modules for any new modules added update-modules module-rebuild populate module-rebuild rebuild (if you feel brave) module-rebuild list (if you want to do it manually) emerge nvidia-drivers (etc) update-modules dispatch-conf eselect opengl set nvidia reboot if you break gentoo (or rather, if gentoo devs break gentoo, or open source hacks break gentoo, or whatever... but ultimately, you...)... boot into ubuntu su - ./chroot_to_gentoo (chroot) ./setup_chroot ** FIX IT ** to install a new kernel that ubuntu will serve up... build it in a chroot back in ubuntu, copy it: cp /mnt/gentoo/usr/src/linux/arch/x86_64/boot/bzImage /boot/linux-blahblbahba and update grub. you can change em both or just the second (and rerun grub-mkconfig >/boot/grub/grub.cfg): emacs /boot/grub/grub.cfg emacs /etc/grub.d/09_gentoo