Maintenance reference: Difference between revisions

Revision as of 17:14, 24 March 2016

general tasks

master keyboard shortcuts map
See .i3/config. Typically you can press ctrl-shift-K to open it in editor. The local file usually points to the common version, here: ~/development/config/common/home/m/.i3/config

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)

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

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 user

Ubuntu

sudo adduser m # this will prompt you for everything
sudo useradd -d /home/m -s /bin/bash -m m # this one-liner works well too
sudo visudo # add a NOPASSWD entry for the user to the END of the file (or NOPASSWD won't stick)
cd .ssh # and scp two files from bitpost (make sure they're rw only to user): id_rsa and authorized_keys

Gentoo 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

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 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.

OS and software installation

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 network-manager-gnome

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
set up networking (see above)

MAKE SURE to turn off stupid errors=mount in /etc/fstab if Ubuntu set it there

# MDM UBUNTU STOP F'IN 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
install sublime editor (see below)
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 set up networking
Install NetworkManager, as the wpagui UI sucks sudo apt-get install network-manager-gnome YOU MUST remove interfaces from /etc/network/interfaces so wpa gives them up to nm-applet add nm-applet to startup if needed - i don't think it is needed as it seems to start up automatically now - try rebooting first

Ubuntu install Sublime
Sublime editor seems 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)

Ubuntu install 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/v0.31.0/install.sh \| bash source ~/.profile nvm ls-remote nvm install ##### # (latest version, eg 5.8.0) MDM I don't need this do I? I'm not running express... 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 install 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 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

Set up a new Pi in 10 minutes
The BEST thing to do is to copy the MicroSD from Carambola (marked with a black 'O'): open a terminal so we can watch the MicroSD /dev/sd{#} assignments sudo tail -f /var/log/syslog take the carambola MicroSD card out of the Pi and put it into an Anker hub (gets less hot than the small MicroSD sleeves - and it WILL get hot!) put another new MicroSD card into another Anker hub open another terminal dcfldd bs=4M if=/dev/sd{Letter of carambola} of=/dev/sd{Letter of new card} They will get HOT... I don't know how to make sure they don't get TOO hot yet... cross your fingers I guess... Drop the new card into the new Pi, boot, change /etc/hostname and reboot

Set up raspbian on a new Pi
Here are all (most?) of the steps to get a raspbian OS going on the Pi (very similar to unbuntu-on-PC). 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 Default user is pi/raspberry, better change that... sudo adduser m sudo passwd pi sudo su - # and use [passwd] to set a known root password One-shot install of everything, then see more detailed notes, below... sudo apt-get install kdm 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 network-manager-gnome iceweasel You may need to reconfig to use KDM so you can pick i3 (although if you log out that might work too - To logout, press Mod+shift+e (like exit) ): sudo dpkg-reconfigure kdm One-shot dev install goes pretty well too: sudo apt-get install scite sciteproj 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 oracle-java8-jdk Install node with Node Version Manager (nvm) exactly the same way as in ubuntu (see above). Pull down and set up config, scripts like in Ubuntu. Pull down thedigitalage/rad-scripts, run [npm install] cd scripts/node/mah-hause, run [npm install], run [sy create] to create all dev repos. There is no chromium-browser - use iceweasel (firefox on ARM) or epiphany-browser (which was enhanced specifically for pi). My editors (Eclipse, sublime) are not really available, use scite instead. Java [apt-get install oracle-java8-jdk] is available in the default raspbian apt repo.

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

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.

Software reference Linux software raid

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

@@ Line 2: / Line 2: @@
 ! general tasks
 |-
-|[[Flash Drives]] - [[Scripts]]
+|[[Flash Drives]] - [[Scripts]] - [[Add a drive]]
 {| class="mw-collapsible mw-collapsed wikitable"
 ! master keyboard shortcuts map
@@ Line 43: / Line 43: @@
   smartctl -t long /dev/sdf
   watch -n 3 smartctl -l selftest /dev/sdf # takes about 5 minutes
-|}
-{| class="mw-collapsible mw-collapsed wikitable"
-! 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
-# 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!
 |}
 {| class="mw-collapsible mw-collapsed wikitable"