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May 19, 2015 - A Look At The New Commandlinefu
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Terminal - All commands - 12,230 results
wget -q -O - 'http://wap.weather.gov.hk/' | sed -r 's/<[^>]+>//g;/^UV/q' | tail -n4
2009-09-25 02:36:46
User: dakunesu
Functions: sed tail wget

"get Hong Kong weather infomation from HK Observatory

From Hong Kong Observatory wap site ;)"

other one showed alot of blank lines for me

find -maxdepth 1 -type f -name "*.7z" -exec 7zr e '{}' ';'
2010-01-23 19:50:10
User: minnmass
Functions: find

Use find's built-in ability to call programs.


find -maxdepth 1 -type f -name "*.7z" -print0 | xargx -0 -n 1 7zr e

would work, too.

setserial -g /dev/ttyS[0-9]* | grep -v "unknown"
test $((RANDOM%2)) -eq 0
sudo add-apt-repository ppa:PPA_TO_ADD
2014-04-24 20:02:39
User: KlfJoat
Functions: sudo

There is no longer a need to add PGP keys for Ubuntu Launchpad PPA's.

The add-apt-repository command creates a new file for the PPA in /etc/sources.list.d/ then adds the PPA's keys to the apt keyring automatically. No muss, no fuss.

perl -pi -e "s/\r/\n/g" <file>
2010-07-29 16:07:36
User: din7
Functions: perl

Replace DOS character ^M with newline using perl inline replace.

eog `curl 'http://xkcd.com/' | awk -F "ng): |</h" '/embedding/{print $2}'`
curl ifconfig.me
wget --spider -o wget.log -e robots=off --wait 1 -r -p http://www.example.com
2011-04-05 13:42:14
User: lele
Functions: wget

This will visit recursively all linked urls starting from the specified URL. It won't save anything locally and it will produce a detailed log.

Useful to find broken links in your site. It ignores robots.txt, so just use it on a site you own!

find . -name '*.java' -o -name '*.xml' | grep -v '\.svn' | xargs wc -l
2011-06-30 12:45:40
User: ewilson
Functions: find grep wc xargs
Tags: find grep wc

There's nothing particularly novel about this combination of find, grep, and wc, I'm just putting it here in case I want it again.

sudo port installed | grep -v 'active\|The' | xargs sudo port uninstall
squidclient mgr:info | grep "file desc"
2010-07-29 17:35:20
User: KoRoVaMiLK
Functions: grep

Shows useful informations about file descriptors in Squid web proxy

makeself <archive_dir> <file_name> <label>
2012-01-10 18:08:50
User: totti

Used by virtualbox and others to create '.run' file.

echo -e 'alias exit='\''pwd > ~/.lastdir;exit'\''\n[ -n "$(cat .lastdir 2>/dev/null)" ] && cd "$(cat .lastdir)"' >> ~/.bash_aliases
2014-01-28 18:02:04
User: ichbins
Functions: cd echo
Tags: exit pwd

this command will add the following two lines into the ~/.bash_aliases:

alias exit='pwd > ~/.lastdir;exit'

[ -n "$(cat .lastdir 2>/dev/null)" ] && cd "$(cat .lastdir)"

or redirect it to the ~/.bashrc if you like

Donno, I find it usefull. You may also define an alias for 'cd ~' like - alias cdh='cd ~'

function sshdel { perl -i -n -e "print unless (\$. == $1)" ~/.ssh/known_hosts; }
2009-02-03 16:20:50
User: xsawyerx
Functions: perl

sometimes you got conflicts using SSH (host changing ip, ip now belongs to a different machine) and you need to edit the file and remove the offending line from known_hosts. this does it much easier.

Use history -S in your .logout file
2009-02-07 10:53:14
User: vijucat

That's the key part.

I got this from http://www.macosxhints.com/article.php?story=20070715091413640. See that article for other other, more basic, tcsh-specific history-related settings.

echo "sed -e"|perl -pe 's/sed -e/perl -pe/'
2009-02-16 18:39:06
User: drossman
Functions: echo

Replace sed regular expressions with perl patterns on the command line.

The sed equivalent is: echo "sed -e"|sed -e 's/sed -e/perl -pe/'

cat file | tr -d "\n"
2010-12-02 09:22:02
User: uzsolt
Functions: cat file tr

This command deletes the "newline" chars, so its output maybe unusable :)

$grep -hIr -m 1 em:name ~/.mozilla/firefox/*.default/extensions|sed 's#\s*##'|tr '<>=' '"""'|cut -f3 -d'"'|sort -u
2010-05-24 08:03:53
User: raj77_in
Functions: sed sort tr

with grep for em:name rather than name, you will get much better result.

wc -L files
zcat log.tar.gz | grep -a -i "string"
2011-09-14 17:20:43
User: dycropts
Functions: grep zcat

Useful in system where log files are compressed for archival purposes

find . -type f -print0 | xargs -0r awk '/^\xEF\xBB\xBF/ {print FILENAME} {nextfile}'
trash <file>
2012-11-22 18:05:11
User: bkmeneguello
Tags: bash trash rm

# put into .bashrc

function trash() {

if [ -z "$*" ] ; then

echo "Usage: trash filename"


local TRASH="${HOME}/.local/share/Trash"

if [ ! -d "$TRASH/files" ]; then mkdir -p "$TRASH/files"; fi

if [ ! -d "$TRASH/info" ]; then mkdir -p "$TRASH/info"; fi

local IFS_BKP=$IFS



for FILE in $@ ; do

local BASE=$( basename "$FILE" )


local COUNTER=1

while [ -e "$TRASH/files/$TRASH_NAME" ]; do




local FULL_PATH=$( readlink -f "$FILE" )

local DATE=$( date +%Y-%m-%dT%H:%M:%S )


if [ $? -eq 0 ]; then

echo "[Trash Info]


DeletionDate=$DATE" > "$TRASH/info/$TRASH_NAME.trashinfo"






grep -w /media/KINGSTON /proc/mounts | cut -d " " -f
curl ifconfig.me