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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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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands using sed from sorted by
Terminal - Commands using sed - 1,159 results
mpc play $(sed -n "s@^[ >]\([0-9]\+\)) $(mpc playlist|cut -d' ' -f3-|dmenu -i -p 'song name'||echo void)@\[email protected]" < <(mpc playlist))
2009-10-30 16:22:10
User: gibboris
Functions: sed

Add a [fluxbox] binding in your key file then this

command provides a dmenu selector for the next track to play

mysql -u <user> --password=<password> -e "SHOW COLUMNS FROM <table>" <database> | awk '{print $1}' | tr "\n" "," | sed 's/,$//g'
2009-10-29 13:42:17
User: maxmanders
Functions: awk sed tr

Useful when you need to write e.g. an INSERT for a table with a large number of columns. This command will retrieve the column names and comma-separate them ready for INSERT INTO(...), removing the last comma.

getdji (){local url sedcmd;url='http://finance.yahoo.com/q?d=t&s=^DJI';sedcmd='/(DJI:.*)/,/Day.*/!d;s/^ *//g;';sedcmd="$sedcmd/Change:/s/Down / -/;/Change:/s/Up / +/;";sedcmd="$sedcmd/Open:/s//& /";lynx -dump "$url" | sed "$sedcmd"; }
git ls-files | while read i; do git blame $i | sed -e 's/^[^(]*(//' -e 's/^\([^[:digit:]]*\)[[:space:]]\+[[:digit:]].*/\1/'; done | sort | uniq -ic | sort -nr
2009-10-25 09:40:01
User: pipping
Functions: read sed sort uniq
Tags: statistics git

You'll run into trouble if you have files w/ missing newlines at the end. I tried to use

PAGER='sed \$q' git blame

and even

PAGER='sed \$q' git -p blame

to force a newline at the end, but as soon as the output is redirected, git seems to ignore the pager.

sed -n '/test/{/error\|critical\|warning/d;p}' somefile
2009-10-25 09:07:00
User: pipping
Functions: sed

That's what the sed command should've been, sorry.

sed -n /start_pattern/,/stop_pattern/p file.txt
declare -F | sed 's/^declare -f //'
sed '/test/{/error\|critical\|warning/d}' somefile
2009-10-24 15:59:59
User: pipping
Functions: sed

If you wanted to do all in one command, you could go w/ sed instead

pushd .> /dev/null; cd /; for d in `echo $OLDPWD | sed -e 's/\// /g'`; do cd $d; echo -n "$d "; ls -ld .; done; popd >/dev/null
2009-10-22 12:32:11
User: syladmin
Functions: cd echo ls sed
Tags: permissions

Can easily be scripted in order to show permission "tree" from any folder. Can also be formated with

column -t

{ pushd .> /dev/null; cd /; for d in `echo $OLDPWD | sed -e 's/\// /g'`; do cd $d; echo -n "$d "; ls -ld .; done; popd >/dev/null ; } | column -t

from http://www.commandlinefu.com/commands/view/3731/using-column-to-format-a-directory-listing

sed -ne '/^Package: \(.*\)/{s//\1/;h;};/^Installed-Size: \(.*\)/{s//\1/;G;s/\n/ /;p;}' /var/lib/dpkg/status | sort -rn
2009-10-19 19:01:17
User: arcege
Functions: sed sort

Use the hold space to preserve lines until data is needed.

uuencode -m $1 /dev/stdout | sed '1d' | sed '$d' | tr -d '\n' | xclip -selection clipboard
2009-10-19 09:03:09
User: caliburning
Functions: sed tr uuencode
Tags: xclip uuencode

I use it for embedding images in CSS for Stylish, the Firefox addon.

Thought it might be useful to others.

sed -n '/^function h\(\)/,/^}/p' script.sh
2009-10-19 07:55:35
User: haivu
Functions: sed
Tags: bash sed

I often need to extract a function from a bash script and this command will do it.

geoip(){curl -s "http://www.geody.com/geoip.php?ip=${1}" | sed '/^IP:/!d;s/<[^>][^>]*>//g' ;}
weather() { lynx -dump "http://mobile.weather.gov/port_zh.php?inputstring=$*" | sed 's/^ *//;/ror has occ/q;2h;/__/!{x;s/\n.*//;x;H;d};x;s/\n/ -- /;q';}
echo -n a | od -d | sed -n "s/^.* //gp"
2009-10-17 15:46:00
User: stf42
Functions: echo od sed

the shortest command for character 'a' i know

x=1 ; while [ $x -le 10 ] ; do lynx -dump http://www.alexa.com/siteinfo/http://[YOUR WEBSITE] | grep Global | sed 's/ \|Global\|\,//g' >> /var/log/alexa-stats.txt ; sleep 5h ; done &
2009-10-17 13:48:05
User: felix001
Functions: grep sed sleep

This will record the Alexa Traffic Stats to a file and run every 5 hours.

-- www.fir3net.com --

for i in ~/Desktop/Personal/Wallpapers/*.jpg ; { size=$((`identify -format "%wx%h" $i | sed 's/x/*/'`)) ; if [[ $size -lt 800001 ]] then ; rm -f "$i" ; fi; }
2009-10-16 00:21:21
User: cbrinker
Functions: rm sed

For all of the jpgs in a directory, determine their size and if below a threshold remove them forcefully.

seq -w 100 | sed 's/^/login/'
2009-10-15 13:56:56
User: lawrence
Functions: sed seq

This command generates a sequential login list. Good to be used as a source of new logins.

sed -n 5p <file>
2009-10-15 11:00:48
User: Waldirio
Functions: sed

You can get one specific line during any procedure. Very interesting to be used when you know what line you want.

seq 4|xargs -n1 -i bash -c "echo -n 164.85.216.{} - ; nslookup 164.85.216.{} |grep name"|tr -s ' ' ' '|awk '{print $1" - "$5}'|sed 's/.$//'
sed -e "$ ! s/$/,/"
2009-10-13 10:13:52
User: jgc
Functions: sed

In this simple example the command will add a comma to the end of every line except the last. I found this really useful when programatically constructing sql scripts. See sample output for example.

dpkg --get-selections | cut -f1 | while read pkg; do dpkg -L $pkg | xargs -I'{}' bash -c 'if [ ! -d "{}" ]; then echo "{}"; fi' | tr '\n' '\000' | du -c --files0-from - | tail -1 | sed "s/total/$pkg/"; done
2009-10-12 14:57:54
User: pykler
Functions: bash cut du echo read sed tail tr xargs
Tags: Debian wajig

Calculates the size on disk for each package installed on the filesystem (or removed but not purged). This is missing the

| sort -rn

which would put the biggest packges on top. That was purposely left out as the command is slightly on the slow side

Also you may need to run this as root as some files can only be checked by du if you can read them ;)

for f in *.html; do sed '$d' -i "$f"; done
2009-10-12 14:46:43
User: alperyilmaz
Functions: sed

sed can be used deleting the last line and with -i option, there's no need to for temp files, the change is made on the actual file

ifs () { echo -n "${IFS}"|hexdump -e '"" 10/1 "'\''%_c'\''\t" "\n"' -e '"" 10/1 "0x%02x\t" "\n\n"'|sed "s/''\|\t0x[^0-9]//g; $,/^$/d"
2009-10-10 22:41:35
User: dennisw
Functions: echo hexdump sed

You can display, save and restore the value of $IFS using conventional Bash commands, but these functions, which you can add to your ~/.bashrc file make it really easy.

To display $IFS use the function ifs shown above. In the sample output, you can see that it displays the characters and their hexadecimal equivalent.

This function saves it in a variable called $saveIFS:

sifs () { saveIFS=$IFS; }

Use this function to restore it

rifs () { IFS=$saveIFS; }

Add this line in your ~/.bashrc file to save a readonly copy of $IFS:

declare -r roIFS=$IFS

Use this function to restore that one to $IFS

rrifs () { IFS=$roIFS; }
find . -type d -print | sed -e 's;[^/]*/;..........;g'|awk '{print $0"-("NR-1")"}'