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May 19, 2015 - A Look At The New Commandlinefu
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find ./ -iname "*.mp3" -type f -printf "mv '%p' '%p'\n" | sed -e "s/mp3'$/mp3'/I" | sh
2009-03-27 13:42:40
User: jnash
Functions: find sed

Extensible to other ugly extensions like *.JPG, *.Jpg etc..

Leave out the last pipe to sh to perform a dry run.

for i in {0..1}{0..9}; do echo $i; done
2009-09-18 02:51:12
User: dennisw
Functions: echo
Tags: bash strings

Bash 4 will let you do {00..19} to get leading zeros, but Bash 3 doesn't have that feature. This technique gets you partway there (the sequences need be such that the last digit ranges from zero to nine - you can't use this for something like Bash 4's {03..27}, for example). When this limitation is not a problem, you can avoid some complicated string manipulation for concatenating leading zeros.

You can add more digits like this: {0..1}{0..9}{0..9} (ranges from 0 to 99 with up to two leading zeros). To pad with additional zeros:

for i in 000{0..1}{0..9}; do echo $i; done


for i in {0..1}{0..9}; do echo "000$i"; done

This is useful for creating values to sort or for creating filenames with a fixed format. Note that this will also work:

touch {0..1}{0..9}
gst-launch avimux name=mux ! filesink location=out.avi \ alsasrc ! audioconvert ! queue ! mux. istximagesrc name=videosource use-damage=false ! video/x-raw-rgb,framerate=10/1 ! videorate ! ffmpegcolorspace ! video/x-raw-yuv,framerate=10/1 ! mux.
2010-07-15 09:39:51
User: Nicolargo

The command generate an huge output file (depending on screen resolution and time).

pbzip2 -dck <bz2file> | tar xvf -
jda() { cd $(pwd | sed "s/\(\/$@\/\).*/\1/g"); }
find . -type f \( -name "*.js" -o -name "*.php" -o -name "*.inc" -o -name "*.html" -o -name "*.htm" -o -name "*.css" \) -exec grep -il 'searchString' {} \;
2010-02-07 15:28:20
User: niels_bom
Functions: find grep
Tags: find grep search

Use find to recursively make a list of all files from the current directory and downwards. The files have to have an extension of the ones listed. Then for every file found, grep it for 'searchString', returns the filename if searchString is found.

alias dush="du -xsm * | sort -n | awk '{ printf(\"%4s MB ./\",\$1) ; for (i=1;i<=NF;i++) { if (i>1) printf(\"%s \",\$i) } ; printf(\"\n\") }' | tail"
2010-07-15 10:38:27
User: dopeman
Functions: alias

Essentially the same as funky's alias, but will not traverse filesystems and has nicer formatting.

sed -e "s,/\+$,," -e "s,^/\+,," file.txt
2012-11-02 21:08:30
User: bugmenot
Functions: sed

There can be more than one trailing slash, all of them will be removed.

@echo off && sc create CmdAsSystem type= own type= interact binPath= "cmd /c start cmd /k (cd c:\ ^& color ec ^& title ***** SYSTEM *****)" && net start CmdAsSystem && sc delete CmdAsSystem
2010-02-07 15:28:28
User: willemijns

In 2014, ask a kind of specific UAC authorization to run due to his dangerousity.

ifconfig eth0|awk '/HWaddr/{gsub(/:/,"",$5);print $5}'
fortune | cowsay $(ls/usr/share/cowsay | shuf -n1)
2014-10-23 10:09:44

To install on centos 6.2

for Centos auto accept:

yum install fortune* -y

yum install cowsay* -y

Removed the -f command as I dont know how, but it works without it.

Almost the same but one folder higher =).

DD=`cat /etc/my.cnf | sed "s/#.*//g;" | grep datadir | tr '=' ' ' | gawk '{print $2;}'` && ( cd $DD ; find . -mindepth 2 | grep -v db\.opt | sed 's/\.\///g; s/\....$//g; s/\//./;' | sort | uniq | tr '/' '.' | gawk '{print "CHECK TABLE","`"$1"`",";";}' )
2009-07-25 03:42:31
User: atcroft
Functions: cd find gawk grep sed sort tr uniq

This command will generate "CHECK TABLE `db_name.table_name` ;" statements for all tables present in databases on a MySQL server, which can be piped into the mysql command. (Can also be altered to perform OPTIMIZE and REPAIR functions.)

Tested on MySQL 4.x and 5.x systems in a Linux environment under bash.

/usr/bin/Xephyr :5 -query localhost -once -fullscreen -ac -keybd "ephyr,,,xkbmodel=pc105,xkblayout=it,xkbrules=evdev,xkboption="
2012-11-03 01:21:36
User: hute37
Tags: Xephyr xdmcp

XDMCP ust be enabled (gdm,lightdm,xdm etc )

sudo aptitude -y install iasl && sudo cat /sys/firmware/acpi/tables/DSDT > dsdt.dat && iasl -d dsdt.dat
2009-02-15 23:13:50
User: brettalton
Functions: cat install sudo

In July 2008, there was an uproar over Foxconn motherboards feeding Linux installs incorrect ACPI information (http://ubuntu-virginia.ubuntuforums.org/showthread.php?t=869249).

Foxconn has gladly corrected their mistake, but make sure it's not happening on your motherboard!

After running the command, just view the 'dsdt.dsl' in any editor you like.

for dnsREC in $(curl -s http://www.iana.org/assignments/dns-parameters |grep -Eo ^[A-Z\.]+\ |sed 's/TYPE//'); do echo -n "$dnsREC " && dig +short $dnsREC IANA.ORG; done
for i in `cat /etc/passwd | awk -F : '{ print $1 }';`; do passwd -e $i; done
sed -e 's/{"url":/\n&/g' ~/.mozilla/firefox/*/sessionstore.js | cut -d\" -f4
change-homepage(){ sed -ri 's|( "homepage": ").*(",)|\1'"$@"'\2|' .config/chromium/Default/Preferences; }
ssh-add ~/.ssh/KEY_PAIR_NAME.pem
2012-11-03 02:59:52
User: brockangelo
Functions: ssh ssh-add
Tags: ssh EC2

This command adds your pem key to SSH so that you no longer have to manually specify it when connecting to EC2 instances.

# you can do this:

ssh ec2-instance.amazonaws.com

# instead of this:

ssh -i ~/.ssh/KEY_PAIR_NAME.pem ec2-instance.amazonaws.com

for menu in {1..4}; do echo -e "<ul>\n <li>menu $menu</li>\n <ul>"; for items in {1..5}; do echo " <li>item $items</li>"; if [ $items -eq 5 ];then echo -e " </ul>";fi;done; echo "</ul>";done | xclip
2013-09-22 06:34:32
User: qcjn
Functions: echo

This will create rapidly an html menu. You can paste it in you're html page with the middle button(the wheel). I didn't test it in an html with css, but it seems alright.

du --max-depth=1 | grep -v '\.\/\.'
grep -l bar *.log | xargs grep -l foo
2011-01-10 19:54:46
User: dlebauer
Functions: grep xargs
Tags: bash xargs grep

Uses xargs to call the second grep with the first grep's results as arguments

fromdos <file>
2011-02-14 17:28:53
User: jbuitt

requires the package tofrodos on Debian/Ubuntu:

sudo apt-get install tofrodos

for i in {1..40};do echo -n $i. $(date +%H:%M:%S):\ ; (time curl 'http://ya.ru/' &> /dev/null) 2>&1|grep real;sleep 1;done
2011-11-11 10:40:38
User: AntonyC
Functions: date echo grep sleep time
Tags: curl

This uses curl to find out the access times of a web service