Commandlinefu

sudo !!

python -m SimpleHTTPServer

^foo^bar

ctrl-x e

'ALT+.' or '<ESC> .'

mount | column -t

curl ifconfig.me

echo "ls -l" | at midnight

man ascii

dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp

sshfs name@server:/path/to/folder /path/to/mount/point

dig +short txt <keyword>.wp.dg.cx

mount -t tmpfs tmpfs /mnt -o size=1024m

wget --random-wait -r -p -e robots=off -U mozilla http://www.example.com

ctrl-l

ssh user@host cat /path/to/remotefile | diff /path/to/localfile -

time read (ctrl-d to stop)

ssh -t reachable_host ssh unreachable_host

curl -u user:pass -d status="Tweeting from the shell" http://twitter.com/statuses/update.xml

while sleep 1;do tput sc;tput cup 0 $(($(tput cols)-29));date;tput rc;done &

disown -a && exit

less +F somelogfile

echo "You can simulate on-screen typing just like in the movies" | pv -qL 10

getconf LONG_BIT

python2 -c 'import urllib2 as u, sys as s, json as j, subprocess as p;p.call(["mplayer", u.urlopen(j.loads(u.urlopen("http://ex.fm/api/v3/song/search/%s" % "+".join(s.argv[1:])).read())["songs"][0]["url"]).geturl().split("#")[0]])' lenny kravitz fly away

color () { local color=39; local bold=0; case $1 in green) color=32;; cyan) color=36;; blue) color=34;; gray) color=37;; darkgrey) color=30;; red) color=31;; esac; if [[ "$2" == "bold" ]]; then bold=1; fi; echo -en "\033[${bold};${color}m"; }

cat part1.avi part2.avi part3.avi > tmp.avi && mencoder -forceidx -oac copy -ovc copy tmp.avi -o output.avi && rm -f tmp.avi

pv -tpreb /dev/sda | dd of=/dev/sdb bs=1M

wget -r -l1 -H -nd -A mp3 -e robots=off http://example/url

leo (){ l="en"; if [ "${1:0:1}" = "-" ]; then l=${1:1:2};shift;fi;Q="$*";curl -s "https://dict.leo.org/${l}de/?search=${Q// /%20}" | html2text | sed -e '0,/H.ufigste .*/d;/Weitere Aktionen/,$d;/f.r Sie .*:/,$d' | grep -aEA900 '^\*{5} .*$'; }

info --subnodes -o - <item> | less

echo $[RANDOM % 2]

sshpass -p "YOUR_PASSWORD" ssh -o StrictHostKeyChecking=no YOUR_USERNAME@SOME_SITE.COM

vimhtml() { [[ -f "$1" ]] || return 1; vim +'syn on | run! syntax/2html.vim | wq | q' "$1";}

python -c 'import sys, yaml, json; json.dump(yaml.load(sys.stdin), sys.stdout, indent=4)' < file.yaml > file.json

complete -C "perl -e '@w=split(/ /,\$ENV{COMP_LINE},-1);\$w=pop(@w);for(qx(screen -ls)){print qq/\$1\n/ if (/^\s*\$w/&&/(\d+\.\w+)/||/\d+\.(\$w\w*)/)}'" screen

sudo -u apache find . -not -readable

git stash branch testchanges

tcpdump -l -s0 -w - tcp dst port 25 | strings | grep -i 'MAIL FROM\|RCPT TO'

vim -O file1 file2

prlimit --cpu=10 sort -u hugefile

find ~/ -type d \( -wholename '/dev/*' -o -wholename '/sys/*' -o -wholename '/proc/*' \) -prune -o -exec test -w {} \; -exec echo {} writable \; 2>/dev/null

(echo -e "HTTP/1.1 200 Ok\n\r"; tail -f /var/log/syslog) | nc -l 1234

xprop | awk '/PID/ {print $3}'

ls -lhR | grep -e "total\|:$"

mplayer -nolirc <Streaming_URL> -dumpstream -dumpfile output.mp3

perldoc -l Module::Name 2>/dev/null

echo -e "You are a jerk\b\b\b\bwonderful person" | pv -qL $[10+(-2 + RANDOM%5)]

find . -type l -exec test ! -e {} \; -delete

history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head

ping -i 60 -a IP_address

mv filename.{old,new}

echo "!!" > foo.sh

pushd /tmp

rm !(*.foo|*.bar|*.baz)

ps aux | sort -nk +4 | tail

some_very_long_and_complex_command !!! Example "label

lsof -i

\[command]

!*

lsof -P -i -n

diff <(sort file1) <(sort file2)

man hier

echo "The date is: $(date +%D)"

awk '/start_pattern/,/stop_pattern/' file.txt

nc -v -l 80 < file.ext

ifconfig | convert label:@- ip.png

CDPATH=:..:~:~/projects

awk '!x[$0]++' <file>

vim -x <FILENAME>

ssh-copy-id username@hostname

fuser -k filename

find -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate

sed "s/^.//g" files

vim `git status --porcelain | sed -ne 's/^ M //p'`

watch -t -n 1 date +%T

echo -e "\e[32m"; while :; do printf '%*c' $(($RANDOM % 30)) $(($RANDOM % 2)); done

for /l %a in (0,0,0) do start

ip -o -4 a s

lsblk -o NAME,TYPE,FSTYPE,LABEL,SIZE,MODEL,MOUNTPOINT

du -sm /home/* | sort -nr | head -n 10

echo -e "`curl -sL http://www.commandlinefu.com/commands/random/json|sed -re 's/.*,"command":"(.*)","summary":"([^"]+).*/\\x1b[1;32m\2\\n\\n\\x1b[1;33m\1\\x1b[0m/g'`\n"

find .  -type f -exec ls -l --full-time {} + | sort -k 6,7

find ./ -type f -name "*.txt" -exec tar uvf myarchives.tar {} +

tree -L 1 -ChDit | tac

tar -cvzf home_backup.tar.gz --exclude={.*,Downloads} /home/<user>

qr(){ qrencode ${1} -o - | xview stdin; }

grep -r -Z -l "<text>" . | xargs -0 echo rm

find . -type f -exec chmod a-x {} +

export HISTFILE="$HOME/.bash_history-$(hostname -s)"

while true; do sudo cat /dev/input/mouse0|read -n1;streamer -q -o /tmp/cam.jpeg -s 640x480 > /dev/null 2>&1; sleep 10;done

at midnight<<<'ls -l'

for device in /sys/bus/pci/devices/*; do echo "$(basename ${device} | cut -c '6-') $(cut -c '3-6' ${device}/class): $(cut -c '3-' ${device}/vendor):$(cut -c '3-' ${device}/device)"; done

<ctrl+a>:at "#" stuff "echo hello world^M"

echo text | sed $"s/./&\xCC\xB6/g"

tr a-zA-Z A-Za-z < input.txt

find . -maxdepth 1 -type f | wc -l

ldd file | grep "=> /" | awk '{print $3}' | xargs -I '{}' cp -v '{}' /destination

!:-

python -m smtpd -n -c DebuggingServer localhost:1025

cat /etc/issue

wget -qO - "http://www.tarball.com/tarball.gz" | tar zxvf -

ps aux | grep [p]rocess-name

rename 'y/ /_/' *

cat ~/.ssh/id_rsa.pub | ssh user@machine "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys"

tr -c "[:digit:]" " " < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR="1;32" grep --color "[^ ]"

ESC *

mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>

translate(){ wget -qO- "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=$1&langpair=$2|${3:-en}" | sed 's/.*"translatedText":"\([^"]*\)".*}/\1\n/'; }

fc

sudo dd if=/dev/mem | cat | strings

ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'

mkdir /home/foo/doc/bar && cd $_

man -t manpage | ps2pdf - filename.pdf

readom dev=/dev/scd0 f=/path/to/image.iso

read day month year <<< $(date +'%d %m %y')

strace -ff -e trace=write -e write=1,2 -p SOME_PID

pv sourcefile > destfile

mkdir -p a/long/directory/path

rm -f !(survivior.txt)

? () { echo "$*" | bc -l; }

i="8uyxVmdaJ-w";mplayer -fs $(curl -s "http://www.youtube.com/get_video_info?&video_id=$i" | echo -e $(sed 's/%/\\x/g;s/.*\(v[0-9]\.lscache.*\)/http:\/\/\1/g') | grep -oP '^[^|,]*')

alias 'ps?'='ps ax | grep '

num_lines=${1:-42}

ps -p $$

sed '${/^$/d}' file

for f in /*part1.rar;do unrar e .$f.;done

curl http://whatthecommit.com/index.txt

xml2 < file.xml | grep ^/path/to/element | cut -f2- -d=

hex() { bc <<< "obase=16; $1"; }

convert -resize 200 awk.pdf[0] awk.png

import -window `xwininfo | awk '/Window id/{print $4; exit}'` `uuidgen`.png

gpg -c <filename>

du -sh * | sort -rh | head

rsync -rv --exclude .svn src/dir/ dest/dir/

echo '{"json":"obj"}' | python -mjson.tool

totem-video-thumbnailer -pg 25 in_video out_png

tpb() { wget -U Mozilla -qO - $(echo "http://thepiratebay.org/search/$@/0/7/0" | sed 's/ /\%20/g') | grep -o 'http\:\/\/torrents\.thepiratebay\.org\/.*\.torrent' | tac; }

find . ! -name "$(printf '*[\001-\037\177]*')"

filext () { echo ${1##*.}; }

ps -ef --sort=-%cpu

upto() { cd "${PWD/\/$@\/*//$@}" }

quietly() { "$@" |&:; }

cat ~/.ssh/id_rsa.pub | ssh <REMOTE> "(cat > tmp.pubkey ; mkdir -p .ssh ; touch .ssh/authorized_keys ; sed -i.bak -e '/$(awk '{print $NF}' ~/.ssh/id_rsa.pub)/d' .ssh/authorized_keys;  cat tmp.pubkey >> .ssh/authorized_keys; rm tmp.pubkey)"

mysqldump -u $USER --password=$PASSWORD  --add-drop-table --no-data "$DATABASE" | grep ^DROP | mysql -u $USER --password=$PASSWORD "$DATABASE"

lsof -Pn | grep LISTEN

command -v bash

dd if=/dev/cdrom of=~/cd_image.iso

vim scp://username@host//path/to/somefile

git add -u

^Z $bg $disown

netstat -an | grep ESTABLISHED | awk '{print $5}' | awk -F: '{print $1}' | sort | uniq -c | awk '{ printf("%s\t%s\t",$2,$1) ; for (i = 0; i < $1; i++) {printf("*")}; print "" }'

strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo

ss -p

pv access.log | gzip > access.log.gz

ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg

du -s * | sort -n | tail

find . -type d -empty -delete

grep -RnisI <pattern> *

date -d@1234567890

cat /dev/urandom | hexdump -C | grep "ca fe"

for code in {0..255}; do echo -e "\e[38;05;${code}m $code: Test"; done

dd if=/dev/zero of=/dev/null bs=1M count=32768

watch -n 1 mysqladmin --user=<user> --password=<password> processlist

curl wttr.in/seville

gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=OUTPUT.pdf -c .setpdfwrite -f INPUT.pdf

cmdfu(){ curl "http://www.commandlinefu.com/commands/matching/$@/$(echo -n $@ | openssl base64)/plaintext"; }

watch -t -n1 "date +%T|figlet"

ssh -MNf <user>@<host>

cp file.txt{,.bak}

chmod --reference file1 file2

curl -u username:password --silent "https://mail.google.com/mail/feed/atom" | tr -d '\n' | awk -F '<entry>' '{for (i=2; i<=NF; i++) {print $i}}' | sed -n "s/<title>\(.*\)<\/title.*name>\(.*\)<\/name>.*/\2 - \1/p"

open .

p=$(echo "hello world, how r u?"|sed 's/ /+/g');wget -U Mozilla -q -O - "$@" translate.google.com/translate_tts?tl=en\&q=$p|mpg123 -

#command

echo 'fOo BaR' | tr '[A-Z]' '[a-z]' | sed 's/\(^\| \)\([a-z]\)/\1\u\2/g'

cp --sparse=always <SRC> <DST>

DATE=$(date +%Y-%m-%d_%H-%M-%S)-$(($(date +%N)/10000000)); HOST=ssh_host; DEST=file_dest; URL=url/screenshot_$DATE.png; import -window root png:- | ssh $HOST "cat > $DEST/screenshot_$DATE.png"; echo $URL | xclip; notify-send -u low "Title" "Message"

eval $(date +"day=%d; month=%m; year=%y")

netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

whowatch

parallel -j4 cd {}\; pwd\; git pull :::: <(git submodule status | awk '{print $2}')

sudo bash -c "sleep 1h ; command"

cat /sys/class/net/*/address

for f in /sys/class/net/*; do echo -e "$(basename $f)\t$(cat $f/address)"; done

shutdown -h 240 & disown

ls * | sed -e 'p;s/foo/bar/' | xargs -n2 mv

while true; do tput sc; tput cup 0 $(($(tput cols)-74)); w | grep load; tput rc; sleep 10; done &

wget -U Mozilla -qO - "http://thepiratebay.org/search/your_querry_here/0/7/0" | grep -o 'http\:\/\/torrents\.thepiratebay\.org\/.*\.torrent'

declare -f <function name>

tr '\0' '\377' < /dev/zero|dd count=$((<bytes>/512))

tail -f somefile |tee >(grep --line-buffered '1' > one.txt) |tee >(grep --line-buffered '2' > two.txt)

sed '10,20!d'

( cd $DIR; command; )

curl -I g.cn

dd if=/dev/zero of=testfile bs=1024 count=5000

while [[ 1 ]] ; do clear; banner `date +%H:%M:%S` ; sleep 1; done

quickemail() { echo "$*" | mail -s "$*" email@email.com; }

notify-send ["<title>"] "<body>"

mount /path/to/file.iso /mnt/cdrom -oloop

timeout 5s COMMAND

ssh-keygen -R <the_offending_host>

ps awwfux | less -S

dpkg -S /usr/bin/ls

echo "rm -rf /unwanted-but-large/folder" | batch

sed -n 5p <file>

ssh -t remote_host screen -r

bind -P

rtfm() { help $@ || man $@ || $BROWSER "http://www.google.com/search?q=$@"; }

diff <(lsof -p 1234) <(sleep 10; lsof -p 1234)

tar -tf <file.tar.gz> | xargs rm -r

lsof -i tcp:80

until !!; do :; done

script -qf | tee >(nc -kl 5000) >(nc -kl 5001) >(nc -kl 5002)

curl ifconfig.me

python -m http.server

ssh -t hostA ssh hostB

date --set="$(ssh user@server date)"

ls -d */

google docs edit --title "To-Do List" --editor vim

sudo touch /forcefsck

% screen -r someuser/

wget -q -U Mozilla -O output.mp3 "http://translate.google.com/translate_tts?ie=UTF-8&tl=en&q=hello+world

env LC_CTYPE=C tr -dc "a-zA-Z0-9-_\$\?" < /dev/urandom | head -c 10

perl -ne 'print if !$a{$_}++'

echo 'hardstatus alwayslastline " %d-%m-%y %c:%s | %w"' >> $HOME/.screenrc; screen

watch -n1 'date "+%T"'

seq -s "+" 3 | bc

yes "echo -ne '\r'\`date\`;sleep 1" | sh

ls -Xp | grep -Eo "\.[^/]+$" | sort | uniq

ls -l --time-style=+"%Y-%m-%d %H:%M:%S"

diff -Naur --strip-trailing-cr

ssh USER@REMOTESYSTEM arecord - | aplay -

while true; do lynx --dump http://whatthecommit.com/ | head -n 1 | cowsay; sleep 2; done

find . -type f -mtime +100 -exec tar rvf my.tar --remove-files {} \;

zless +/search_pattern file.gz

ffmpeg -i input.m4a -acodec libmp3lame -ab 128k output.mp3

getent passwd $(whoami) | cut -f 5 -d: | cut -f 1 -d,

paste <(pacman -Q | awk '{ print $1; }' | xargs pacman -Qi | grep 'Size' | awk '{ print $4$5; }') <(pacman -Q | awk '{print $1; }') | sort -n | column -t

awk '{gsub("<[^>]*>", "")}1' file

abiword --to=html file.doc --exp-props=

rtfm() { help $@ || $@ -h || $@ --help || man $@ || $BROWSER "http://www.google.com/search?q=$@"; }

du -sk * | sort -rn | head

wget -qO- www.commandlinefu.com/commands/by/PhillipNordwall | awk -F\> '/num-votes/{S+=$2; I++}END{print S/I}'

echo <percentage> > /proc/acpi/video/VGA/LCD/brightness

git archive --format=tar HEAD | (cd /var/www/ && tar xf -)

curl http://ifconfig.me/ip

qrurl() { curl -sS "http://chart.apis.google.com/chart?chs=200x200&cht=qr&chld=H|0&chl=$1" -o - | display -filter point -resize 600x600 png:-; }

lsof -P -i -n | cut -f 1 -d " "| uniq | tail -n +2

ssh root@remote.host "rpm -qa" | xargs yum -y install

wget http://www.youtube.com/watch?v=dQw4w9WgXcQ -qO- | sed -n "/fmt_url_map/{s/[\'\"\|]/\n/g;p}" | sed -n '/^fmt_url_map/,/videoplayback/p' | sed -e :a -e '$q;N;5,$D;ba' | tr -d '\n' | sed -e 's/\(.*\),\(.\)\{1,3\}/\1/' | wget -i - -O surprise.flv

dig +short myip.opendns.com @resolver1.opendns.com

watch -n 1 'echo "obase=2;`date +%s`" | bc'

leave +15

du -b --max-depth 1 | sort -nr | perl -pe 's{([0-9]+)}{sprintf "%.1f%s", $1>=2**30? ($1/2**30, "G"): $1>=2**20? ($1/2**20, "M"): $1>=2**10? ($1/2**10, "K"): ($1, "")}e'

mkdir -p work/{d1,d2}/{src,bin,bak}

wget -r -l1 --no-parent -nH -nd -P/tmp -A".gif,.jpg" http://example.com/images

lsmod | perl -e 'print "digraph \"lsmod\" {";<>;while(<>){@_=split/\s+/; print "\"$_[0]\" -> \"$_\"\n" for split/,/,$_[3]}print "}"' | dot -Tpng | display -

[enter]~?

diff <(cd dir1 && find | sort) <(cd dir2 && find | sort)

:<C-R><C-W>

youtube-dl -t --extract-audio --audio-format mp3 YOUTUBE_URL_HERE

grep ^Dirty /proc/meminfo

echo "tee can split a pipe in two"|tee >(rev) >(tr ' ' '_')

ssh host -l user $(<cmd.txt)

for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done

knock <host> 3000 4000 5000 && ssh -p <port> user@host && knock <host> 5000 4000 3000

export HISTTIMEFORMAT="%F %T "

find ./ -type f -exec chmod 644 {} \;

sudo find / -mmin 60 -type f

mkfifo /tmp/fifo; cat /tmp/fifo | nc -l -p 1234 | tee -a to.log | nc machine port | tee -a from.log > /tmp/fifo

showkey -a

cp /work/host/phone/ui/main.cpp !#$:s/host/target

awk '{ if ($1 in stored_lines) x=1; else print; stored_lines[$1]=1 }' infile.txt > outfile.txt

bash -x script.sh

lsof -iTCP -sTCP:ESTABLISHED | awk '{print $1}' | sort -u

watch --interval 1 "cat /proc/acpi/thermal_zone/THRM/*; cat /proc/cpuinfo | grep MHz; cat /proc/acpi/processor/*/throttling"

lynx --dump http://www.commandlinefu.com/commands/random/plaintext | grep .

read -a A<<<".*.**..*....*** 8 9 5 10 6 0 2 11 7 4";for C in `date +"%H%M"|fold -w1`;do echo "${A:${A[C+1]}:4}";done

rsync -av --ignore-existing --exclude="dir1" --exclude="dir2" /pathA /pathB

ssh -fND localhost:PORT USER@SSH_ENABLED_SERVER

wget -O LICENSE.txt http://www.gnu.org/licenses/gpl-3.0.txt

ln -nvfs /source /destination

tail -f file | while read line; do printf "$(date -u '+%F %T%z')\t$line\n"; done

~ ctrl-z

find -L -type l

slow2() { ionice -c3 renice -n 20 $(pstree `pidof $1` -p -a -u -A|gawk 'BEGIN{FS=","}{print $2}'|cut -f1 -d " ") ; }

find . -empty -type f -delete

mv -- -filename filename

sudo apt-add-repository 'deb http://archive.offensive-security.com pwnsauce main microverse macroverse restricted universe multiverse' && wget -q http://archive.offensive-security.com/backtrack.gpg -O- | sudo apt-key add -

find . -type d -name .svn -execdir rm -rf {} +

autossh -M 0 -p 22 -C4c arcfour,blowfish-cbc -NfD 8080 -2 -L localport1:server1:remoteport1 -L bind_address2:localport2:server2:remoteport2 user@sshserver

ping -i1 www.google.com &> /dev/null & disown

pdftohtml -i -stdout FILE.pdf | w3m -T text/html

losetup /dev/loop0 harddrive.img; kpartx -a -v /dev/loop0; mount /dev/mapper/loop0p1 /mountpoint/

alias sshv='ssh -vvv -o LogLevel=DEBUG3'

touch -t "YYYYMMDDhhmm.ss" ~/.ts ; find . -newer ~/.ts

for I in `/sbin/lspci |awk '/VGA/{print $1}'`;do /sbin/lspci -v -s $I;done

:w !sudo tee > /dev/null %

find . -name "*.[ch]" -exec grep -i -H "search pharse" {} \;

wget -qO - http://infiltrated.net/blacklisted|awk '!/#|[a-z]/&&/./{print "iptables -A INPUT -s "$1" -j DROP"}'

find . -type f -newermt "2010-01-01" ! -newermt "2010-06-01"

arecord -f dat | ssh -C user@host aplay -f dat

ssh root@server.com 'tshark -f "port !22" -w -' | wireshark -k -i -

md () { mkdir -p "$@" && cd "$@"; }

grep --color=always | less -R

echo | openssl s_client -connect www.google.com:443 2>/dev/null |openssl x509 -dates -noout

awk '{$1=$3=""}1' file

ls !(*.gz)

history -d

echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") | sudo tee /sys/bus/usb/drivers/usb/unbind

sed -i 8d ~/.ssh/known_hosts

grep . filename > newfilename

ssh -t user@some.domain.com /usr/bin/screen -xRR

for file in `ls *.pdf`; do convert -verbose -colorspace RGB -resize 800 -interlace none -density 300 -quality 80 $file `echo $file | sed 's/\.pdf$/\.jpg/'`; done

echo ${SSH_CLIENT%% *}

echo $[RANDOM%X+1]

lsof -Pan -i tcp -i udp

alias dush="du -sm *|sort -n|tail"

tar --exclude-vcs -cf src.tar src/

lshw -html > hardware.html

kill -9 $$

dig +short google.com

ping -c 1 google.com | egrep -m1 -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'

bash -i 2>&1 | tee /dev/stderr | nc -l 5000

grep ^[^#] /etc/file.conf

nmap -p 22 --open -sV 192.168.2.0/24

to() { eval dir=\$$1; cd "$dir"; }

Ctrl+a

ffmpeg -t 300 -r '0.5' -i head-%03d.png -i ../TvQuran.com__144.mp3 -acodec copy muxed.flv

awk "BEGIN{ print $* }"

file /bin/* | msort -j -l -n-1 -n2 2> /dev/null

shout () { curl -s "http://shoutkey.com/new?url=$1" | sed -n 's/\<h1\>/\&/p' | sed 's/<[^>]*>//g;/</N;//b' ;}

sudo hwinfo --framebuffer

googl () { curl -s -d "url=${1}" http://goo.gl/api/url | sed -n "s/.*:\"\([^\"]*\).*/\1\n/p" ;}

imageshack() { for files in *; do curl -H Expect: -F fileupload="@$files" -F xml=yes -!!! Example ""http://www.imageshack.us/index.php" | grep image_link | sed -e 's/<image_link>/[IMG]/g' -e 's/<\/image_link>/[\/IMG]/g'; done; }

kill -9 `ps ax | egrep [f]elix.jar | egrep -o -e '^ *[0-9]+'`

curl -Is slashdot.org | sed -n '5p' | sed 's/^X-//'

sort -R SOMEFILE

shuf SOMEFILE

pkill -9 search_criteria

ntpq -p

LD_TRACE_LOADED_OBJECTS=1 name_of_executable

unzip '*.zip'

dig +trace google.com

echo "savedefault --default=2 --once" | grub --batch; sudo reboot

ram() { for i in /tmp /altroot;do mount -t tmpfs tmpfs $i;done&& for i in /var /root /etc $HOME; do find -d $i |cpio -pdmv /tmp&& mount -t tmpfs tmpfs $i&& mv -v /tmp$i/* $i&& rm -vrf /tmp$i ; done ;} usage: (in rc sequence) ram

mysqldump --add-drop-table --extended-insert --force --log-error=error.log -uUSER -pPASS OLD_DB_NAME | ssh -C user@newhost "mysql -uUSER -pPASS NEW_DB_NAME"

diff <(lsusb) <(sleep 3s && lsusb)

find / -type f -size +500M

:TOhtml

yes | pv | ssh $host "cat > /dev/null"

nl

:mksession! <filename>

ssh remotehost 'dpkg --get-selections' | dpkg --set-selections && dselect install

bind -x '"\C-l":ls -l'

DISPLAY=:0.0 import -window root /tmp/shot.png

grep -Fx -f file1 file2

alias head='head -n $((${LINES:-`tput lines 2>/dev/null||echo -n 12`} - 2))'

pdftotext [file] - | grep 'YourPattern'

apt-get install most && update-alternatives --set pager /usr/bin/most

tar -cf - . | pv -s $(du -sb . | awk '{print $1}') | gzip > out.tgz

date -d @1234567890

sudo strings /dev/mem

diff <(echo "$a") <(echo "$b")

bash -x ./post_to_commandlinefu.sh

tidy -xml -i -m [file]

tar --create --file - --posix --gzip -- <dir> | openssl enc -e -aes256 -out <file>

bc <<< 'obase=60;299'

some_command > >(/bin/cmd_for_stdout) 2> >(/bin/cmd_for_stderr)

( ( sleep 2h; your-command your-args ) & )

killall -STOP -m firefox

ssh user@remote 'cat >> ~/.ssh/authorized_keys2' < ~/.ssh/id_rsa.pub

watch -n <time_interval> "du -s <file_or_directory>"

<commmand>; if [[ "$?" = 0 ]]; then echo ':)'; else echo ':('; fi

lsb_release -a

fuser -n tcp {0..65535}

read -e -s -p "Password: " password

ls --quoting-style={escape,shell,c}

echo notify-send test | at now+1minute

find $(pwd) -maxdepth 1

rpm2cpio package.rpm |cpio -dimv

ffmpeg -i input_file.avi output_file.webm

git log --format='%aN <%aE>' | awk '{arr[$0]++} END{for (i in arr){print arr[i], i;}}' | sort -rn | cut -d\  -f2-

:set pt=<f9>

git archive HEAD --format=zip > archive.zip

( ( while [ 2000 -ge "$(free -m | awk '/buffers.cache:/ {print $4}')" ] || [ $(echo "$(uptime | awk '{print $10}' | sed -e 's/,$//' -e 's/,/./') >= $(grep -c ^processor /proc/cpuinfo)" | bc) -eq 1 ]; do sleep 10; done; my-command > output.txt ) & )

cut -f 1 three-column.txt > first-column.txt

awk '{print $1}' < three-column.txt > first-column.txt

HTMLTEXT=$( curl -s http://www.page.de/test.html > /tmp/new.html ; diff /tmp/new.html /tmp/old.html ); if [ "x$HTMLTEXT" != x ] ; then echo $HTMLTEXT | mail -s "Page has changed." mail@mail.de ; fi ; mv /tmp/new.html /tmp/old.html

hostname -I

TZ=PST8PDT+72 date '+%Y_%m_%d'

find . -name .svn  -exec rm \-rf {} \;

grep '^MemFree:' /proc/meminfo | awk '{ mem=($2)/(1024) ; printf "%0.0f MB\n", mem }'

net rpc -I ADDRESS -U USERNAME%PASSWORD service {stop|start} SVCNAME

watch -tn1 'date +%r | figlet'

find . -type d -exec du -sk '{}' \; | awk '($1 < 2048) {print $2}'

./my-really-long-job.sh && notify-send "Job finished"

command | figlet

sl

curl -Is slashdot.org | egrep '^X-(F|B|L)' | cut -d \- -f 2

lynx -accept_all_cookies -cmd_script=/your/keystroke-file

[[ test_condition ]] && if_true_do_this || otherwise_do_that

svn log -q|grep "|"|awk "{print \$3}"|sort|uniq -c|sort -nr

netstat -ant | awk '{print $NF}' | grep -v '[a-z]' | sort | uniq -c

sed '1000000!d;q' < massive-log-file.log

CTRL + T

( command & )

rm *.txt <TAB> <TAB>

vi +/pattern [file]

PROMPT_COMMAND='if [ $RANDOM -le 3200 ]; then printf "\0337\033[%d;%dH\033[4%dm \033[m\0338" $((RANDOM%LINES+1)) $((RANDOM%COLUMNS+1)) $((RANDOM%8)); fi'

read -sn 1 -p "Press any key to continue..."

curl ip.appspot.com

dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n

clfavs(){ URL="http://www.commandlinefu.com";wget -O - --save-cookies c --post-data "username=$1&password=$2&submit=Let+me+in" $URL/users/signin;for i in `seq 0 25 $3`;do wget -O - --load-cookies c $URL/commands/favourites/plaintext/$i >>$4;done;rm -f c;}

echo "foo" > /dev/tcp/192.168.1.2/25

cd !$:h

perl -e 'print "P1\n256 256\n", map {$_&($_>>8)?1:0} (0..0xffff)' | display

lsof -c dhcpd

stat -c '%A %a %n' *

$ grep -rl oldstring . |xargs sed -i -e 's/oldstring/newstring/'

xset dpms force standby

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge

awk -F: '{print "useradd -u "$3,"-c \""$5"\"","-s "$7,$1}' passwd

$COMMAND 2>&1 >/dev/null & WPID=$!; sleep $TIMEOUT && kill $! & KPID=$!; wait $WPID

getent passwd | awk -F: '($3>600) && ($3<10000) && ($3>maxuid) { maxuid=$3; } END { print maxuid+1; }'

dvgrab --format raw - | tee dvstream.dv | ffmpeg2theora -A 45 -V 400 -c 1 -f dv -x 360 -y 288 -o /dev/stdout - | tee savelivestream.ogv | oggfwd -p -d "Stream description" -n "Streamname" my.icecastserver.com 80 icecastpassword /stream.ogv

optipng -o3 *png && advpng -z -4 *png && advdef -z -4 *png

diff <(tail -10 file1) <(tail -10 file2)

yum --disablerepo=* --enablerepo=epel list available

lsof | grep pcm

Kill all process using regular expression (-r option)

utime { date -d @$1; }

ping -c 2 `arp-scan 10.1.1.0/24 | awk '/00:1b:11:dc:a9:65/ {print $1}'`

tail -n2000 /var/www/domains/*/*/logs/access_log | awk '{print $1}' | sort | uniq -c | sort -n | awk '{ if ($1 > 20)print $1,$2}'

s='s=\47%s\47; printf "$s" "$s"'; printf "$s" "$s"

ffmpeg -i broken.flv -acodec copy -vcodec copy fixed.flv

tail -f error_log | nc -l 1234

grep -ioE "(url\(|src=)['\"]?[^)'\"]*" a.html | grep -ioE "[^\"'(]*.(jpg|png|gif)" | while read l ; do sed -i "s>$l>data:image/${l/[^.]*./};base64,`openssl enc -base64 -in $l| tr -d '\n'`>" a.html ; done;

echo "Keyword?";read keyword;query="http://www.shoutcast.com/sbin/newxml.phtml?search="$keyword"";curl -s $query |awk -F '"' 'NR <= 4 {next}NR>15{exit}{sub(/SHOUTcast.com/,"http://yp.shoutcast.com/sbin/tunein-station.pls?id="$6)}{print i++" )"$2}'

mv ubuntu-10.04-rc-desktop-amd64.iso ubuntu-10.04-desktop-amd64.iso; i=http://releases.ubuntu.com/10.04/ubuntu-10.04-desktop-amd64.iso.zsync; while true; do if wget $i; then zsync $i; date; break; else sleep 30; fi; done

tail -f access_log | cut -c2-21 | uniq -c

for p in {1..1023}; do(echo >/dev/tcp/localhost/$p) >/dev/null 2>&1 && echo "$p open"; done

dig +short NS org.

awk 'BEGIN{IGNORECASE=1;FS="<title>|</title>";RS=EOF} {print $2}' file.html

echo $ascii | perl -ne 'printf "%x", ord for split //'

sed '/^$/d'

nc -l -p 2000 -c "nc example.org 3000"

lynx -dump http://www.ip-adress.com/ip_tracer/?QRY=$1|grep address|egrep 'city|state|country'|awk '{print $3,$4,$5,$6,$7,$8}'|sed 's\ip address flag \\'|sed 's\My\\'

man -t UNIX_COMMAND | open -f -a preview

ctrl-t

fdupes -r .

file -s /dev/sd*

bind '"\C-l":"ls -l\n"'

cut -f5 --complement

grep -a -B 25 -A 100 'some string in the file' /dev/sda1 > results.txt

xkcd(){ wget -qO- http://xkcd.com/|tee >(feh $(grep -Po '(?<=")http://imgs[^/]+/comics/[^"]+\.\w{3}'))|grep -Po '(?<=(\w{3})" title=").*(?=" alt)';}

(echo CD_DA; for f in {01..99}; do echo "$f Hz">&2; sox -nt cdda -r44100 -c2 $f.cdda synth 30 sine $f; echo TRACK AUDIO; echo FILE \"$f.cdda\" 0; done) > cdrdao.toc && cdrdao write cdrdao.toc && rm ??.cdda cdrdao.toc

timeout 10 sleep 11

sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g"

tar -cj /backup | cstream -t 777k | ssh host 'tar -xj -C /backup'

sudo zcat /var/log/auth.log.*.gz | awk '/Failed password/&&!/for invalid user/{a[$9]++}/Failed password for invalid user/{a["*" $11]++}END{for (i in a) printf "%6s\t%s\n", a[i], i|"sort -n"}'

find ~ -name '*.sqlite' -exec sqlite3 '{}' 'VACUUM;' \;

read -s pass; echo $pass | md5sum | base64 | cut -c -16

column -tns: /etc/passwd

shuf -n4 /usr/share/dict/words | tr -d '\n'

echo "GRUB_INIT_TUNE=\"1000 334 1 334 1 0 1 334 1 0 1 261 1 334 1 0 1 392 2 0 4 196 2\"" | sudo tee -a /etc/default/grub > /dev/null && sudo update-grub

script -t /tmp/mylog.out 2>/tmp/mylog.time; <do your work>; <CTRL-D>; scriptreplay /tmp/mylog.time /tmp/mylog.out

ls -Q

alias busy='my_file=$(find /usr/include -type f | sort -R | head -n 1); my_len=$(wc -l $my_file | awk "{print $1}"); let "r = $RANDOM % $my_len" 2>/dev/null; vim +$r $my_file'

dd if=/dev/sda | tee >(dd of=/dev/sdb) | dd of=/dev/sdc

for i in emerg alert crit error warn ; do awk '$6 ~ /^\['$i'/ {print substr($0, index($0,$6)) }' error_log | sort | uniq -c | sort -n | tail -1;  done

echo 'obase=16; C+F' | bc

read -p "Press enter to continue.."

for i in `ls ~/.mozilla/firefox/*/Cache`; do file $i | grep -i mpeg | awk '{print $1}' | sed s/.$//; done

if cat /proc/cpuinfo | grep " lm " &> /dev/null; then echo "Got 64bit" ; fi

history | perl -F"\||<\(|;|\`|\\$\(" -alne 'foreach (@F) { print $1 if /\b((?!do)[a-z]+)\b/i }' | sort | uniq -c | sort -nr | head

curl -s icanhazip.com

ssh -t server 'cd /etc && $SHELL'

<esc> q a ...vim commands... <esc> q (to record macro) @a (plays macro 'a').