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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 - 12,230 results
for FILE in $(ls); do [COMMAND]; done
2009-02-17 14:42:46
User: stinger

# Small for loop, that can list files in dir, and after that executes

# [COMMAND] of your choice, usefull for example rename, move, tar etc..

# change cmd's for different results :)

yum erase `yum list installed | grep 'php'`
2009-04-13 12:58:16
Functions: grep

This is useful for remove all packages that are part of a common suite.

perl -lne 'use POSIX; print strftime("%Y-%m-%d", localtime(time() - 86400));'
cat /proc/cpuinfo
2009-02-17 14:50:29
User: stinger
Functions: cat

how to get full cpu info of your (linux) box

psgrep() { if [ ! -z $1 ]; then echo "Grepping for processes matching $1..." ps aux | grep -i $1 | grep -v grep; else echo "!! Need name to grep for"; fi }
2010-02-27 13:47:28
User: evenme
Functions: echo grep ps
Tags: grep ps

Grep for a named process.

awk 'NR==linenumber' filename
echo wikileaks.com | sudo tee -a /etc/hosts
2010-12-13 03:31:07
User: matthewbauer
Functions: echo sudo tee

This one is a little bit easier for those of us that aren't always root.

fdisk -l
snmpwalk -v3 -On -u <user> -l NoAuthNoPriv -m ALL <HOST_IP> .
while true; do netstat -p |grep "tcp"|grep --color=always "/[a-z]*";sleep 1;done
2009-07-16 04:52:49
User: buffer
Functions: grep netstat

The -p parameter tell the netstat to display the PID and name of the program to which each socket belongs or in digestible terms list the program using the net.Hope you know what pipe symbol means!

Presently we wish to only moniter tcp connections so we ask grep to scan for string tcp, now from the op of grep tcp we further scan for regular expression /[a-z]*.

Wonder what that means ?

If we look at the op of netstat -p we can see that the name of the application is preceded by a / ( try netstat -p ) so,now i assume application name contains only characters a to z (usually this is the case) hope now it makes some sense.Regular expression /[a-z]* means to scan a string that start with a / and contains zero or more characters from the range a-z !!. Foof .. is t

snmpwalk -v3 -On -u <user> -l AuthNoPriv -a MD5 -A <auth_password> -m ALL <HOST_IP> .
cat *
2011-12-08 05:32:14
User: bahamas10
Functions: cat

no need for a for loop when cat takes multiple arguments

snmpwalk -v3 -On -u <user> -l AuthNoPriv -a SHA -A <auth_password> -m ALL <HOST_IP> .
links2 -dump http://checkip.dyndns.com | cut -d ' ' -f7
ssh -t myserver.org 'sudo ls /etc'
2013-04-09 04:23:37
User: patko
Functions: ls ssh
Tags: ssh sudo

This command will ask for remote sudo password before executing a remote command.

snmpwalk -v3 -On -u <user> -l AuthPriv -a SHA -A <auth_password> -X <encryption_password> -m ALL <HOST_IP> .
geoip() { lynx -dump "http://www.geoiptool.com/en/?IP=$1" | sed -n '/Host Name/,/Postal code/p' ; }
2011-02-04 14:12:02
User: vando
Functions: sed

Shows you the geolocation of an IP address.

lynx -dump -nolist http://whatthecommit.com/|sed -n 2p
2011-04-17 17:45:18
User: houghi
Functions: sed

Fetch comical VC commit messages from whatthecommit.com

find -name ".svn" -exec rm -rf {} \;
wget -r -k -l 7 -p -E -nc http://site.com/
2011-08-20 10:16:06
User: realjkeee
Functions: wget

-r ? указывает на то, что нужно рекурсивно переходить по ссылкам на сайте, чтобы скачивать страницы.

-k ? используется для того, чтобы wget преобразовал все ссылки в скаченных файлах таким образом, чтобы по ним можно было переходить на локальном компьютере (в автономном режиме).

-p ? указывает на то, что нужно загрузить все файлы, которые требуются для отображения страниц (изображения, css и т.д.).

-l ? определяет максимальную глубину вложенности страниц, которые wget должен скачать (по умолчанию значение равно 5, в примере мы установили 7). В большинстве случаев сайты имеют страницы с большой степенью вложенности и wget может просто ?закопаться?, скачивая новые страницы. Чтобы этого не произошло можно использовать параметр -l.

-E ? добавлять к загруженным файлам расширение .html.

-nc ? при использовании данного параметра существующие файлы не будут перезаписаны. Это удобно, когда нужно продолжить загрузку сайта, прерванную в предыдущий раз.

wget -q -O - "$@" <url>
echo -e "GET /automation/n09230945.asp HTTP/1.0\r\nHost: whatismyip.com\r\n" | nc whatismyip.com 80 | tail -n1
sudo lsof|sed 's/ */ /g'|cut -f3 -d' '|sort -u
2010-07-07 08:20:28
User: binaryten
Functions: cut sed sort sudo

Most systems (at least my macbook) have system users defined, such as _www and using "users" for example will not list them. This command allows you to see who the 'virtual' users are on your system.

function mkdcd () { mkdir "$1" && cd "$1" }