Linux Notes
===
HELPFUL COMMANDS
---
alias l="ls -AlFh"
alias la="ls -Al"
alias lh="ls -Alh"
alias ll="ls -l"
# I'm dumb
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias :q=exit
alias sosh=". \"${HOME}/.$(basename $SHELL)rc\""
function digga() { dig +nocmd "$1" any +multiline +noall +answer }
cp_p () { rsync -WavP --human-readable --progress $1 $2 } # Copy w/ progress
_haz() { command -v "$1" > /dev/null 2>&1 } # Has command in path
alias extip="dig +short myip.opendns.com @resolver1.opendns.com" # Fastest external IP
alias 'hist?'="history | grep -i"
function psgrep() { ps axuf | grep -v grep | grep "$@" -i --color=auto; }
function fname() { find . -iname "*$@*"; }
function take() { mkdir $1 && cd $1 }
alias tls="tmux list-sessions"
alias ta="tmux attach-session -t"
alias td="tmux kill-session -t"
# Concat a bunch of files with headings like ==> File <==
tail -n +1 *.txt
# Colored up cat!
# Easy Insall & Pygments: sudo apt-get install python-pip && sudo pip install Pygments
alias c='pygmentize -O style=monokai -f console256 -g'
# Best available less
# ---
# -F: less exits if entire file can be displayed on one screen
# -i: ignore case for searches
# -R: display raw control characters for ANSI escape sequences
# -S: chop lines longer than screen
# -X: don't clear the screen
export LESS='-FiRSX'
# Checking outbound ports
nc -vz portquiz.net -w 1
# Watch a command with a log
watch -n1 'uptime | tee uptime.log'
# ANSI escape sequences (https://github.com/robertknight/konsole/blob/master/user-doc/README.moreColors)
# ---
ESC[ ... 38;2;[r];[g];[b] ... m Select RGB foreground color
ESC[ ... 48;2;[r];[g];[b] ... m Select RGB background color
ESC[ ... 38;5;[i] ... m Select indexed foreground color
ESC[ ... 48;5;[i] ... m Select indexed background color
[r],[g] and [b] are each values in the range of 0..255 and
represent the brightness as usual for the respective color.
[i] likely is a value in 0..256, but represents an indexed
color assignment composed as follows:
0 .. 15 - System color, these are taken from the schema.
16 .. 231 - Forms a 6x6x6 RGB color cube.
232 .. 255 - A gray scale ramp without black and white.
# Create a crypt encrypted password for /etc/passwd
python -c 'import crypt; print crypt.crypt("password", "$6$salt$")'
MAN PAGE INFO I NEVER REMEMBER
---
Systemd compatibility directory debian [can't find man page]:
/run/systemd/generator.late/[service].service
Linux File System Hierarchy for your flavor
man 7 hier
History Append history lines entered since the beginning of the current Bash session to the history file:
history -a
History Append the history lines not already read from the history file to the current history list.
history -n
Locale Settings [locale(7)]:
export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
Process Tree [pstree(1)]:
pstree -p
Remove all files in /tmp older than 2 days [find(1) EXPRESSIONS]
find /tmp -maxdepth 1 -type f -mtime +2 -exec rm -i "{}" \;
Bash Special Variables [bash(1) PARAMETERS, Special Parameters]:
- `$*`Expands to the positional parameters, starting from one. Quoted expands to words sparated by 1st char of `$IFS`
- `$@``$*` except expands to words separated by space when quoted
- `$#` Number of positional params in decimal
- `$?`Exit status of most recent foreground pipeline
- `$-`Option flags set by the `set` builtin command
- `$$`PID of current shell
- `$!`PID of most recent async/bg command
- `$0`Name of shell or script
- `$_`The underscore variable is set at shell startup and contains the absolute file name of the shell or script being executed as passed in the argument list. Subsequently, it expands to the last argument to the previous command, after expansion.
Bash test a socket exists [bash(1) CONDITIONAL EXPRESSIONS]
test -S [socketname] && echo 'true'
Remove user from /etc/passwd manually without userdel [vipw(8)]:
EDITOR=vim vipw
Remove user from `/etc/shadow` manually without userdel [vipw(8)]:
EDITOR=vim vipw -s
Remove group from /etc/group manually without groupdel [vigr(8)]:
EDITOR=vim vigr
Shell Startup Files [bash(1)/zsh(1) INVOCATION]:
- Linux/Bash/TTY:
`/etc/profile` → first of `~/.bash_profile`, `~/.bash_login`, `~/.profile` that exists
- Linux/Bash/XTerm:
`/etc/bash.bashrc` → `.bashrc`
- Linux/Bash/Scripts (#!/usr/bin/env bash):
looks for `$BASH_ENV` var and sources the expansion of that variable
- Linux/ZShell/TTY:
`/etc/zshenv` → `~/.zshenv` → `/etc/zprofile` → `~/.zprofile` → `/etc/zshrc` → `~/.zshrc` → `/etc/zlogin` → `~/.zslogin` (`/etc/z*` is the default; however `/etc/zsh/z*` seems to be common (at least on Ubuntu))
- Linux/ZShell/XTerm:
`/etc/zshrc` → `~/.zshrc`
- Linux/ZShell/Scripts (#!/usr/bin/env zsh):
`/etc/zshenv`
- OSX/Bash/TTY/XTerm:
`/etc/profile` → first of `~/.bash_profile`, `~/.bash_login`, `~/.profile` that exists
- OSX/Bash/Scripts (/usr/bin/env bash):
looks for `$BASH_ENV` var and sources the expansion of that variable
- OSX/ZShell/TTY/XTerm:
`/etc/zshenv` → `~/.zshenv` → `/etc/zprofile` → `~/.zprofile` → `/etc/zshrc` → `~/.zshrc` → `/etc/zlogin` → `~/.zslogin`
- OSX/ZShell/Scripts (/usr/bin/env zsh):
`/etc/zshenv`
Setting your hostname—Debian and Ubuntu [hostname(1)/hosts(5)]:
1. Edit `/etc/hostname` and add your short hostname, e.g., `echo "parabola" > /etc/hostname`
2. Run `hostname -F /etc/hostname` to update your hostname
3. Edit `/etc/hosts`—order matters: FQDN, HOSTNAME, localhost:
127.0.1.1 parabola.tylercipriani.com parabola localhost
Setting Timezone—Debian and Ubuntu:
dpkg-reconfigure tzdata
Setting Timezone—Arch/CentOS7/systemd:
timedatectl list-timezones
timedatectl set-timezone America/Mountain
Setting Timezone—Old school:
ln -sf /usr/share/zoneinfo/US/Mountain /etc/localtime
POSIX RegEx Patterns [grep(1)]:
[:alnum:] - [a-zA-Z0-9]
[:alpha:] - [a-z]
[:cntrl:] - [\x00-\x1F\x7F]
[:digit:] - [0-9]
[:graph:] - Any visible chars except spaces & control [\x21-\x7E]
[:lower:] - [a-z]
[:print:] - Any visible except control [\x21-\x7E]
[:punct:] - [!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~]
[:space:] - [ \t\r\n\v\f]
[:upper:] - [A-Z]
[:xdigit:] - Hexadecimal digits [A-Fa-f0-9]
Show linked library dependencies of a binary [ldd(1)]
ldd $(command -v )
Dump files in octal [od(1)]
od -c [file]
Dump file as plain hex [xxd(1)]
xxd -p
Reassemble plain hexdump [xxd(1)]
xxd -p -r
Find files in directory with no newline at eof [pcregrep(1)]:
pcregrep -LMr '\n$' .
Cronjob Time Syntax [crontab(5)]:
- m h dom m dow
- m - minute(0–59)
- h - hour(0–23)
- dom - day-of-month(0–31)
- m - month(0-11)
- dow - day-of-week(0–6)
- - anycommand
Send mail [mail(1)]:
echo "Message Body" | mail -s "Mail Subject" user@example.com
Send mail to multiple people [mail(1)]:
echo "Message Body" | mail -s "Mail Subject" -c "user2@example.com user3@example.com" user@example.com
Send mail with attachement [mutt(1)]:
echo "Message Body" | mutt -a /path/to/attachment -s "Subject" -- user@example.com
Dpkg info about the maintainer of a Debian/Ubuntu package:
dpkg-query -W -f='${Maintainer}' coreutils
Find your os version information (https://superuser.com/questions/11008/how-do-i-find-out-what-version-of-linux-im-running)
cat /etc/*release
Create a `.gitkeep` file in all empty directories [find(1)]:
find . -type d -empty -print0 | xargs -0 -I{} touch {}/.gitkeep
IPTables Block an IPAddress [iptables(8) OPTIONS]
iptables -A INPUT -s "$BLOCK_THIS_IP" -j DROP
IPTables Insert a rule to allow inbound tcp traffic on port 8000 (puts the rule at the top)[iptables(8) OPTIONS]
iptables -I INPUT -i eth0 -p tcp --dport 8000 -j ACCEPT
IPTables append a rule to allow inbound tcp traffic on port 8000 (puts the rule at the bottom)[iptables(8) OPTIONS]
iptables -I INPUT -i eth0 -p tcp --dport 8000 -j ACCEPT
IPTables delete the rule to allow inbound tcp traffic on port 8000 [iptables(8) OPTIONS]
iptables -D INPUT -i eth0 -p tcp --dport 8000 -j ACCEPT
IPTables save to file [iptables-save(8)]
iptables-save > /etc/iptables.up.rules
IPTabels survive reboot [https://www.debian-administration.org/article/445/Getting_IPTables_to_survive_a_reboot]:
iptables-save > /etc/iptables.up.rules
printf "#!/usr/bin/env bash\niptables-restore < /etc/iptables.up.rules\n" \
> /etc/network/ifup.d/iptables
chmod +x /etc/network/ifup.d/iptables
TCPDump dump packets to/from host [tcpdump(1)]
tcpdump -n -vvv -XX host [hostname/ip]
TCPDump dump packets to host on ip [tcpdump(1)]
tcpdump -n -vvv -XX dst host 192.0.2.1
Nmap ping scan your network [nmap(1)]
nmap -sn 192.168.1.0/24
Arp show network neighbors [arp(8)]
arp
arp -a
Create gzipped tar from file or directory [tar(1)]
tar -cvzf tarfile.tar.gz directory file otherfile
Create bzipped tar file from file or directory [tar(1) OTHER OPTIONS]
tar -cvjf tarfile.tar.bz2 directory file otherfile
List contents of tar.gz file [tar(1)]
tar -tvzf tarfile.tar.gz
WGet rip a whole site [wget(1)]
wget --recursive --no-clobber --page-requisites --html-extension --convert-links --restrict-file-names=windows --domains --no-parent http://
Upload file via cURL [curl(1)]
curl -X 'POST' -H 'Accept: application/json' -F 'file_name=Test File' -F 'file_contents=@/path/to/file.type' www.example.com/file/add
Fill login form via cURL [curl(1)]
curl -X 'POST' -F 'username=tyler' -F 'password=pass123' www.example.com/login
Forward new port in existing SSH session:
~C
ssh> ?
SSH Generate a public key given a private key [ssh-keygen(1)]
ssh-keygen -y -f [private key]
SSH Get fingerprint from public key [ssh-keygen(1)]
ssh-keygen -l -f [public key]
SSH List key fingerprints in ssh-agent [ssh-add(1)]:
ssh-add -l
SSH update private keys in new format rather than PEM (use 64 rounds—2 seconds)
also add or change passphrase (`-p`)[ssh-keygen(1)]
ssh-keygen -o -a 64 -p -f [id_rsa]
SSH Skip known host file checking [ssh_config(5)]:
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no [server]
SSH Remove hostname from known_hosts file [ssh-keygen(1)]:
ssh-keygen -R [hostname] >> ~/.ssh/known_hosts
SSH automatically add server key to known_hosts file [ssh-keyscan(1)]:
ssh-keyscan -H [hostname] >> ~/.ssh/known_hosts
List currently established, closed, orphaned and waiting TCP sockets:
ss -s
`netstat -tlnp` vs `ss -ln`
$ time netstat -tlnp
netstat -tlnp 0.00s user 0.02s system 97% cpu 0.016 total
$ time ss -ln
ss -ln 0.00s user 0.00s system 83% cpu 0.005 total
Unmount FUSE filesystems [fusermount(1)]:
sudo fusermount -u /path/to/fs
Check disk I/O:
vmstat 1 10
What's using disk I/O [dstat(1)]:
dstat --top-io --top-bio
Show io per-device (needs sysstat package on debian) [iostat(1)]:
iostat -k 2
Show top users of io [iotop(8)]
: -b = non interactive, easier to log
: -o = only show proc doing IO, not all process
: -t = add timestamp
: -qqq = don't show Total DISK READ/Actual DISKREAD after every iteration
: -n 20 = quit after 20 seconds (default never quits)
: tee -a = append to log file as well as show on stdout
iotop -botqqq -n 20 | tee -a /var/log/iotop
Download missing depedencies automatically on Debian/Ubuntu [apt-get(8)]:
sudo apt-get --fix-broken install
Search for packages names not descriptions [apt-get(8)]:
sudo apt-get --names-only install
Insert text at beginning of file without sed:
cat [file] | perl -pe 'BEGIN { print "[text]\n" }' > [outputfile]
Insert text without abusing cat in perl (with backup file):
perl -i.bak -pe 'print "[text]\n" if $. == 1;' [file]
Insert text at the end of the file with perl (with backup file):
perl -i.bak -ne 'print $_; print "[text]\n" if eof;' [file]
Show compile flags for Nginx:
nginx -V 2>&1 | tr -- - '\n' | grep _module
Linux print:
lp -h [cups_server]:[cups_port:-631] -d [destination_printer_name] -o [print_job_options] [filename]
Check Shared Memory Segments:
ipcs -m
Find process attached to shared memory segment
lsof | grep [shmid from ipcs]
Bash reset IFS (http://redsymbol.net/articles/unofficial-bash-strict-mode/)
IFS=$'\n\t'
Debug bash scripts, add:
set -x
Allow traffic via ufw:
sudo ufw allow from [ip/any] to [host/any] port [any/port-num] proto [upd/tcp/whatevs]
RCS Bulk Commit all files in directory
ci -l -t-'[file descriptor]' -m'[commit message]' *
Edit last command with $EDITOR
fc
Check default runlevel for system:
grep ^id /etc/inittab
List services/runlevels chkconfig:
chkconfig --list
Add service to startup with chkconfig:
chkconfig --level 235 [service] on
Remove service from startup with chkconfig:
chkconfig --del [service]
List service runlevels without chkconfig:
ls -l /etc/rc*.d
Add service to startup with update-rc.d:
update-rc.d [service] defaults
Remove service from startup with update-rc.d:
update-rc.d -f [service] remove
OpenSSL generate 2048bit RSA (genpkey supreceeds gen[alg]) [openssl(1)/genpkey(1)]
openssl genpkey -algorithm RSA -out key.pem -pkeyopt rsa_keygen_bits:2048
OpenSSL generate CSR from key, prompts for input, "Common Name" is FQDN [openssl(1)/req(1)]
openssl req -new -key privkey.pem -out cert.csr
OpenSSL find key length from an rsa private key [openssl(1)/rsa(1)]
openssl rsa -in [private_key] -text -noout
Umask defaults set in /etc/login.defs [pam_mask(8)]
Debian 022
files: 0666 & ~022 = 0644 -rw-r--r--
directorys: 0777 & ~022 = 0755 -rwxr-xr-x
CentOS/RHEL 002
files: 0666 & ~002 = 0644 -rw-rw-r--
directorys: 0777 & ~002 = 0755 -rwxrwxr-x
GIT
---
Git checkout last checked out branch:
git checkout -
Git stash unstaged commits [git-stash(1)]
git stash
Git show stash (just changed files) at reference 0 [git-show(1)]
git show stash stash@{0}
Git show contents of stash at stash ref 1 [git-stash(1)]
git stash show -p stash@{1}
Git list all stashes [git-stash(1)]
git stash list
Git list repo contribution authors, order by # of commits [git-shortlog(1)]
git shortlog -sn
Git create patch file from the last commit[git-format-patch(1)]
git format-patch HEAD~ --stdout >
Git check what's in a patch file [git-apply(1)]
git apply --stat
Git test patch file before applying to repo [git-apply(1)]
git apply --check
Git apply patch file [git-apply(1)]
git apply
Git show history and diff of a file [git-log(1)]
git log -p --
Git search for deleted file [git-log(1)]
# Search for file path
git log --diff-filter=D | grep
# Find the delete commit id
git log --all --
Git check ignored patter matched [git-check-ignore(1) v.1.8.5+)
git check-ignore [path]
Git revert merge
git revert -m 1 [sha of merge commit]
Git diff your branch with upstream:
git log HEAD..@{u}
Git check status on a directory you're not in
GIT_REPO="$HOME/hi"
git --work-tree="$GIT_REPO" --git-dir="$GIT_REPO/.git" status
Git list remotes:
git remote -v
Git change remote:
git remote set-url [remote-name] [new-url]
git remote set-url origin https://something
Mongo
---
Mongo show dbs with stats
show dbs
Mongo switch dbs
use [dbname]
Mongo show collections
show collections
Mongo show collection stats
db.[col].stats()
Mongo show collection stats in kilobytes
db.[col].stats(1024)
Mongo pretty print/limit output
db.[col].find().limit(1).pretty()
MySQL
---
MySQL Find Users
SELECT * FROM mysql.user WHERE User like '%whatever%'\G
MySQL Add User to db
GRANT USAGE ON *.* TO ''@'%' IDENTIFIED BY '';
MySQL Give User Access
GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE ON .* TO ''@'%'
MySQL Delete User
DROP USER ''@'%';
FLUSH PRIVILEGES;
MySQL Find User Privileges
SHOW GRANTS for '';
-- or
SHOW GRANTS FOR CURRENT_USER;
MySQL Revoke User Privileges
REVOKE INSERT ON *.* FROM ''@'%';
MySQL Rename User
RENAME USER 'jeffrey'@'localhost' TO 'jeff'@'127.0.0.1';
MySQL Set Password
SET PASSWORD FOR 'bob'@'%.example.org' = PASSWORD('cleartext password');
MySQL Update User Password
UPDATE mysql.user SET Password=PASSWORD('cleartext password') WHERE User='bob' AND Host='%.example.org';
FLUSH PRIVILEGES;
MySQLDump a Single database
mysqldump --compress -h localhost -u [username] -p --quick --single-transaction [db_name] > [dumpfile]
MySQLDump databases
-- NOTE TO USE --add-drop-database YOU MUST USE --databases
mysqldump -h localhost -u [username] -p --add-drop-database --skip-comments --routines --compress --quick --single-transaction --databases [db_name] > [dumpfile]
MySQLDump all DBs like [pattern]
mysqldump -h localhost --quick --single-transaction [db_name] `mysql -ND [db_name] -h localhost -e "show tables like '[pattern]'" | awk '{ printf $1" " }'` > dumpfile.sql
MySQL Add index:
ALTER TABLE `table` ADD INDEX `column_name` (`column_name`)
ALTER TABLE `account_agreement_pricebook` ADD INDEX `pricebook_id` (`pricebook_id`);
MySQL Show indexes:
SHOW INDEX FROM `table`;
MySQL Show available engines
mysql> show engines\G
MySQL Enable engine
INSTALL PLUGIN [engine] SONAME 'ha_[engine].so';
The following plugins are installed into the OS but not into MySQL:
ha_archive.so - archive
ha_blackhole.so - blackhole
ha_example.so - example
ha_innodb_plugin.so - InnoDB Plugin
MySQL Replication things to know:
* REPLICATION SETUP: http://plusbryan.com/mysql-replication-without-downtime
* Monitor Seconds_Behind_Master
* Monitor Exec_Master_Log_Pos
* Run SHOW PROCESSLIST;—take note of the SQL thread to see if it is processing long running queries.
* Keep an eye on master_db_host:/var/log/mysql/slow.log—this is a log of the longest-running mysql queries—try to optimize 'em
* SHOW PROCESSLIST; (or SHOW FULL PROCESSLIST;) on the Slave:
* there should be two DB Connections whose user name is `system user`
* One of those DB Connections will have the current SQL statement being processed by replication.
* As long as a different SQL statement is visible each time you run SHOW PROCESSLIST;, you can trust mysql is still replicating properly.
MySQL Replication Last_Error: Duplicate Key Entry
stop slave; set global mysql_slave_skip_counter = 1; start slave; -- repeat :)
Is MySQL Slave Processing Relay Logs?
STOP SLAVE IO_THREAD;
SHOW SLAVE STATUS\G
-- check Exec_Master_Log_Pos --
SHOW SLAVE STATUS\G
-- if it doesn't move—it's working—run: --
START SLAVE IO_THREAD;
PostgreSQL show user defined types
SELECT n.nspname AS schema,
pg_catalog.format_type ( t.oid, NULL ) AS name,
t.typname AS internal_name,
CASE
WHEN t.typrelid != 0
THEN CAST ( 'tuple' AS pg_catalog.text )
WHEN t.typlen < 0
THEN CAST ( 'var' AS pg_catalog.text )
ELSE CAST ( t.typlen AS pg_catalog.text )
END AS size,
pg_catalog.array_to_string (
ARRAY( SELECT e.enumlabel
FROM pg_catalog.pg_enum e
WHERE e.enumtypid = t.oid
ORDER BY e.oid ), E'\n'
) AS elements,
pg_catalog.obj_description ( t.oid, 'pg_type' ) AS description
FROM pg_catalog.pg_type t
LEFT JOIN pg_catalog.pg_namespace n
ON n.oid = t.typnamespace
WHERE ( t.typrelid = 0
OR ( SELECT c.relkind = 'c'
FROM pg_catalog.pg_class c
WHERE c.oid = t.typrelid
)
)
AND NOT EXISTS
( SELECT 1
FROM pg_catalog.pg_type el
WHERE el.oid = t.typelem
AND el.typarray = t.oid
)
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND pg_catalog.pg_type_is_visible ( t.oid )
ORDER BY 1, 2;
PostgreSQL show queries the generate `\d...` commands
\set ECHO_HIDDEN
PostgreSQL equivalent of MySQL's `\G'
\x\g\x
PROGRAMMING SPECIFIC
---
PHP Find PHP CLI extension directory:
php -i | grep 'extension_dir'
PHP find pecl config extension directory:
pecl config-show | grep 'ext_dir'
Bundler show gems with path
bundle list --paths
NPM ingore SSL problems
npm config set strict-ssl false
Upgrade Node via NPM
sudo npm cache clean -f && sudo npm install -g n && sudo n stable
Weechat.
---
Weechat add a server
/server add [SERVER_NICK_NAME] server.host.name/+6667 -autoconnect
Weechat remove a server
/server del [SERVER_NICK_NAME]
Weechat toggle nicklist
/bar toggle nicklist
Weechat set nicklist postion
/set weechat.bar.nicklist.position top
Weechat bind nicklist key
/key bind meta-f /bar toggle nicklist
Weechat bind newline glitch key
/key bind meta-g /set weechat.look.eat_newline_glitch toggle
Weechat fix formatting
/set weechat.look.prefix_align none
/set weechat.look.align_end_of_lines time
Weechat disable fix formatting
/set weechat.look.prefix_align right
/set weechat.look.align_end_of_lines message
Weechat split window horizontally
/window splith [percentage]
Weechat close split window
/window merge
Weechat jump around splits use F7/F8
Weechat add more nickname colors
/set weechat.color.chat_nick_colors red,green,brown,blue,magenta,cyan,white,lightred,lightgreen,yellow,lightblue,lightmagenta,lightcyan
DUMB
---
- Generate a list of your most used commands—
history | sed "s/^[0-9 ]*//" | sed "s/ *| */\n/g" | awk '{print $1}' | sort | uniq -c | sort -rn | head -n 100 > commands.txt
- The Useless Use of `cat` Award - http://partmaps.org/era/unix/award.html#cat
- Terminal Keynote (Ruby) - https://github.com/fxn/tkn
- Boom. Motherfucking Text Snippets on the command line - http://zachholman.com/boom/
- Spark sparklines for your shell - http://zachholman.com/spark/
- Lolcat - https://github.com/busyloop/lolcat
- cowsay - https://github.com/schacon/cowsay
- Ponysay - https://github.com/erkin/ponysay
- FIGlet - http://www.figlet.org/
- Libcaca - http://caca.zoy.org/wiki/libcaca
- Toilet - http://caca.zoy.org/wiki/toilet
- Boxes - http://boxes.thomasjensen.com/
- Cadubi - http://langworth.com/pub/cadubi/
- img2txt - http://hit9.org/img2txt/
- Nyancat - https://github.com/klange/nyancat
- CMatrix - http://www.asty.org/cmatrix/
- janbrennen rice - https://github.com/janbrennen/rice
- dotshare.it - http://dotshare.it
- linux logo - http://freecode.com/projects/linuxlogo
- bb - http://aa-project.sourceforge.net/bb/
- Powerline Font symbols - https://powerline.readthedocs.org/en/latest/fontpatching.html
- Stupid Programmer Tricks/Starwars gifs - http://rarlindseysmash.com/posts/stupid-programmer-tricks-and-star-wars-gifs