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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Terminal - All commands - 12,412 results
grep -Hrn "text" .
for i in `pip list -o --format legacy|awk '{print $1}'` ; do pip install --upgrade $i; done
free && sync && echo 3 > /proc/sys/vm/drop_caches && free
grep -c ".*" filename
2016-10-26 22:32:23
User: zlemini
Functions: grep

Returns the number of lines in a file, emulates "wc -l" behavior with grep.

alias bman='man --html=x-www-browser'
2016-10-23 17:59:47
User: lordtoran
Functions: alias
Tags: man groff

An easy alias for opening a manpage, nicely HTML formatted, in your set internet browser.

If you get a "command exited with status 3" error you need to install groff.

xmlstarlet ed -u '//food[calories="650"]/calories' -v "999" simple.xml
id <username> | sed s/' '/'\n'/g | sed s/,/',\n '/g | sed s/'('/' ('/g | sed s/uid/' uid'/g | sed s/gid/' gid'/g | sed s/=/' = '/g
printf -vl "%${COLUMNS:-`tput cols 2>&-||echo 80`}s\n" && echo ${l// /-};
2016-09-25 10:37:20
User: AskApache
Functions: echo printf

Unlike other methods that use pipes and exec software like tr or sed or subshells, this is an extremely fast way to print a line and will always be able to detect the terminal width or else defaults to 80. It uses bash builtins for printf and echo and works with printf that supports the non-POSIX `-v` option to store result to var instead of printing to stdout.

Here it is in a function that lets you change the line character to use and the length with args, it also supports color escape sequences with the echo -e option.

function L() { local l=; builtin printf -vl "%${2:-${COLUMNS:-`tput cols 2>&-||echo 80`}}s\n" && echo -e "${l// /${1:-=}}"; }

With color:

L "`tput setaf 3`="

1. Use printf to store n space chars followed by a newline to an environment variable "l" where n is local environment variable from $COLUMNS if set, else it will use `tput cols` and if that fails it will default to 80.

2. If printf succeeds then echo `$l` that contains the chars, replacing all blank spaces with "-" (can be changed to anything you want).

From: http://www.askapache.com/linux/bash_profile-functions-advanced-shell.html http://www.askapache.com/linux/bash-power-prompt.html

aws cloudfront list-distributions | jq -r '.DistributionList | .Items | .[] | .Id + " " + .Aliases.Items[]'
2016-09-19 06:36:59
User: hendry
Tags: aws jq awscli

Looking up the id of a CF domain can be painful. Not anymore with this tip.

pip freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U
find . -name '*.desktop' | sed s/[^/]*\.desktop$// | uniq -c | sort -g
2016-09-16 12:22:38
User: T4b
Functions: find sed sort uniq

In this case searches for where .desktop files are stored. The resulted is a sorted list of the top directories containing such files.

Xephyr -keybd ephyr,,,xkbmodel=evdev,xkblayout=it -listen tcp -ac -reset -output VGA1 :5
2016-09-12 15:59:07
User: hute37
Tags: X awesome Xephyr

# from xfce session to avoid keyboard shortcut clashing

# start xephyr in VGA1 monitor:

Xephyr -keybd ephyr,,,xkbmodel=evdev,xkblayout=it -listen tcp -ac -reset -output VGA1 :5

# then start an xterm locally

export DISPLAY=:5.0


# and remote ssh (no X fw needed if local tcp with access disablesd (-tcp -ac) => UNSECURE!!!

ssh remote-host

export DISPLAY=notebook:5.0

xrdb -merge ~/.Xresources

xterm -geometry 132x50-0+0

# start awesome

dbus-launch $(which awesome)

dex -a -e Awesome

for y in {1..10}; do for x in {1..10}; do echo -n "| $x*$y=$((y*x)) "; done; echo; done|column -t
2016-09-07 12:31:18
User: lpalgarvio
Functions: column echo

The multiplication table for math study

find . -name \*.pyc -delete
curl ipinfo.io
2016-09-04 08:23:25
User: MrTux

Return IP information about your external ip address with JSON format

host -t srv _ldap._tcp | sed "s/.*[ ]\([^ ]*\)[.]$/\1/g" | xargs -i ping -c 1 {} | grep -E "(statistics|avg)" | sed "s/^--- \([^ ]*\).*/,\1:/g"|tr -d "\n" | tr "," "\n" | sed "1d;s|^\([^:]*\).*=[^/]*/\([^/]*\).*|\2\t\1|g" |sort -n
2016-09-02 03:26:29
User: glaudiston
Functions: grep host ping sed sort tr xargs
Tags: ldap

This command line detect ldap hosts, by mandatory dns entry, then ping them to detect response average. based on ping response average it sorts and print the faster server in first output line

ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'
2016-09-01 14:02:43
User: chrismccoy
Functions: awk ifconfig
Tags: ifconfig awk

For machines that have many ip blocks spanning different Class C's, this will show which ones.

tail -v -f $(php -i | grep "^[ \t]*error_log" | awk -F"=>" '{ print $2; }' | sed 's/^[ ]*//g')
2016-08-31 12:13:31
User: paulera
Functions: awk grep sed tail

Runs "php -i", filter the error_log location, then watches it using "tail"

curl wttr.in/seville
$ sed "2s/$/ $(sed -n '4p' sound.desktop)/" sound.desktop
2016-08-23 02:50:31
User: pibarnas
Functions: sed

Using "", which allow bash commands to be interpreted by sed scripts, I've embedded a sed script in another sed substitution, in case, the 4th line of the file at the end of the second one.

rsync --daemon --port 1234 --no-detach -v --config rsyncd.conf
mv ~/html/*~ ~
2016-08-17 17:28:07
User: pascalv
Functions: mv
Tags: mv html CGI

This prevents access to old CGI code

Print everything after last slash
2016-08-17 07:10:33
User: qdrizh
Functions: last
Tags: sed

FQPN - Path = Filename

pip install --prefix $PWD -I pip
2016-08-16 06:02:17
User: yoyoyojomo
Functions: install

For subsequent commands in the prefixed path:

PYTHONPATH=$PWD/lib/python*/site-packages ./bin/pip --version
printf '%s-%s-%s-%s\n' $(grep -v "[A-Z]\|'" /usr/share/dict/british | shuf -n 4)
2016-08-15 08:13:10
User: hendry
Functions: grep printf

https://xkcd.com/936/ introduced us to what actually is a good password. Here's such an implementation.

Credit: quinq on #suckless