Commands using sed sorted by votes

Commands using sed (1,319)

sorted by

Down for everyone or just me?

Check if a site is down with downforeveryoneorjustme.com
This is sample output - yours may be different.
13

down4me() { wget -qO - "http://www.downforeveryoneorjustme.com/$1" | sed '/just you/!d;s/<[^>]*>//g' ; }

vando · 2011-03-11 14:38:38 4
du with colored bar graph

i'm using gawk, you may get varying mileage with other varieties. You might want to change the / after du to say, /home/ or /var or something, otherwise this command might take quite some time to complete. Sorry it's so obsfucated, I had to turn a script into a one-liner under 255 characters for commandlinefu. Note: the bar ratio is relative, so the highest ratio of the total disk, "anchors" the rest of the graph. EDIT: the math was slightly wrong, fixed it. Also, made it compliant with older versions of df. Show Sample Output
This is sample output - yours may be different.
```
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| /usr 5.71248% total
|||||||||||||||||||||||||||||||||||| /var 3.19542% total
||||||||||||||||| /home 1.49544% total
||||||||| /lib 0.75594% total
|| /boot 0.154587% total
```
13

t=$(df|awk 'NR!=1{sum+=$2}END{print sum}');sudo du / --max-depth=1|sed '$d'|sort -rn -k1 | awk -v t=$t 'OFMT="%d" {M=64; for (a=0;a<$1;a++){if (a>c){c=a}}br=a/c;b=M*br;for(x=0;x<b;x++){printf "\033[1;31m" "|" "\033[0m"}print " "$2" "(a/t*100)"% total"}'

kevinquinnyo · 2011-12-01 01:21:11 15

Put it in your ~/.bashrc usage: google word1 word2 word3... google '"this search gets quoted"' Show Sample Output

function google { Q="$@"; GOOG_URL='https://www.google.de/search?tbs=li:1&q='; AGENT="Mozilla/4.0"; stream=$(curl -A "$AGENT" -skLm 10 "${GOOG_URL}${Q//\ /+}" | grep -oP '\/url\?q=.+?&amp' | sed 's|/url?q=||; s|&amp||'); echo -e "${stream//\%/\x}"; }

michelsberg · 2013-04-05 08:04:15 9

archive all files containing local changes (svn)

Create a tgz archive of all the files containing local changes relative to a subversion repository. Add the '-q' option to only include files under version control: svn st -q | cut -c 8- | sed 's/^/\"/;s/$/\"/' | xargs tar -czvf ../backup.tgz Useful if you are not able to commit yet but want to create a quick backup of your work. Of course if you find yourself needing this it's probably a sign you should be using a branch, patches or distributed version control (git, mercurial, etc..)
This is sample output - yours may be different.
12

svn st | cut -c 8- | sed 's/^/\"/;s/$/\"/' | xargs tar -czvf ../backup.tgz

chrisdrew · 2009-02-09 11:24:31 15
count IPv4 connections per IP

usefull in case of abuser/DoS attacks. Show Sample Output
This is sample output - yours may be different.
```
14 111.111.111.111
     28 123.123.123.123
     34 0.0.0.0
```
12

netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | sed s/::ffff:// | cut -d: -f1 | sort | uniq -c | sort -n

dt · 2009-02-15 09:16:16 19
Print just line 4 from a textfile

this method should be the fastest
This is sample output - yours may be different.
12

sed -n '4p'

infinull · 2010-07-08 22:07:40 7
Print just line 4 from a textfile

Prints the 4th line and then quits. (Credit goes to flatcap in comments: http://www.commandlinefu.com/commands/view/6031/print-just-line-4-from-a-textfile#comment.)
This is sample output - yours may be different.
12

sed -n '4{p;q}'

kniht · 2010-07-10 00:26:22 5
Tells which group you DON'T belong to (opposite of command "groups") --- uses sed

special thanks to XwZ :)
This is sample output - yours may be different.
11

sed -e "/$USER/d;s/:.*//g" /etc/group | sed -e :a -e '/$/N;s/\n/ /;ta'

gniourf_gniourf · 2009-02-13 18:07:57 15
Convert camelCase to underscores (camel_case)

Useful for switching over someone else's coding style who uses camelCase notation to your style using all lowercase with underscores. Show Sample Output
This is sample output - yours may be different.
```
$ cat file.txt
camelCase
$ sed -r 's/([a-z]+)([A-Z][a-z]+)/\1_\l\2/g' file.txt
camel_case
```
11

sed -r 's/([a-z]+)([A-Z][a-z]+)/\1_\l\2/g' file.txt

atoponce · 2009-04-28 22:44:45 15
Stream YouTube URL directly to mplayer

The original doesn't work for me - but this does. I'm guessing that Youtube updated the video page so the original doesn't work.
This is sample output - yours may be different.
11

id="dMH0bHeiRNg";mplayer -fs http://youtube.com/get_video.php?video_id=$id\&t=$(curl -s http://www.youtube.com/watch?v=$id | sed -n 's/.*, "t": "$[^"]*$", .*/\1/p')

matthewbauer · 2009-08-13 14:16:01 7
Remove lines that contain a specific pattern($1) from file($2).

The -i option in sed allows in-place editing of the input file. Replace myexpression with any regular expression. /expr/d syntax means if the expression matches then delete the line. You can reverse the functionality to keep matching lines only by using: sed -i -n '/myexpression/p' /path/to/file.txt
This is sample output - yours may be different.
11

sed -i '/myexpression/d' /path/to/file.txt

jgc · 2009-11-09 11:40:45 7
List your MACs address
This is sample output - yours may be different.
11

lsmac() { ifconfig -a | sed '/eth\|wl/!d;s/ Link.*HWaddr//' ; }

vando · 2011-03-19 12:41:38 9
Find Malware in the current and sub directories by MD5 hashes

Command makes use of the Malware Hash Registry (http://www.team-cymru.org/Services/MHR/). It parses the current directory and subdirectories and calculates the md5 hash of the files, then prints the name and sends the hash to the MHR for a lookup in their database. The 3rd value in the result is the detection percentage across a mix of AV packages. Show Sample Output
This is sample output - yours may be different.
```
Checking:  ./yffix3Qs.zip
d95a72eb35820cc1dc3d750b53090b78 1318649640 NO_DATA
Checking:  ./B_Malware_210911/soft.exe
52ca815d29da154fc1dff687505feab3 1318649641 NO_DATA
Checking:  ./B_Malware_210911/sistem_nod.exe
6325547dd016d2e47e258396dc695ed7 1316696641 18
Checking:  ./B_Malware_210911/yabotovrot.exe
33b76caf40a7ac013fded283b0f87c1e 1317442076 39
Checking:  ./cat
332fc925297433af694c835afb8609f7 1318649646 NO_DATA
Checking:  ./alot_symbolleiste_lexika_installer.exe
7cf02c378e195a85f586bbb83f7f4660 1318649647 NO_DATA
```
11

IFS=$'\n' && for f in `find . -type f -exec md5sum "{}" \;`; do echo $f | sed -r 's/^[^ ]+/Checking:/'; echo $f | cut -f1 -d' ' | netcat hash.cymru.com 43 ; done

Neo23x0 · 2011-10-15 03:38:47 6
print multiplication formulas

seq -s ' ' 1 9 | sed -n ':a;p;s/ *\w$//;h;/^$/t;b a;q' | tac | awk '{for(i=1;i 1x1=1 1x2=2 2x2=4 1x3=3 2x3=6 3x3=9 1x4=4 2x4=8 3x4=12 4x4=16 1x5=5 2x5=10 3x5=15 4x5=20 5x5=25 1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36 1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49 1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64 1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81
This is sample output - yours may be different.
11

seq 9 | sed 'H;g' | awk -v RS='' '{for(i=1;i<=NF;i++)printf("%dx%d=%d%s", i, NR, i*NR, i==NR?"\n":"\t")}'

kev · 2011-10-22 18:41:09 31
find and replace tabs for spaces within files recursively
This is sample output - yours may be different.
10

find ./ -type f -exec sed -i 's/\t/ /g' {} \;

sfusion · 2009-05-28 10:10:21 7
FAST Search and Replace for Strings in all Files in Directory

I needed a way to search all files in a web directory that contained a certain string, and replace that string with another string. In the example, I am searching for "askapache" and replacing that string with "htaccess". I wanted this to happen as a cron job, and it was important that this happened as fast as possible while at the same time not hogging the CPU since the machine is a server. So this script uses the nice command to run the sh shell with the command, which makes the whole thing run with priority 19, meaning it won't hog CPU processing. And the -P5 option to the xargs command means it will run 5 separate grep and sed processes simultaneously, so this is much much faster than running a single grep or sed. You may want to do -P0 which is unlimited if you aren't worried about too many processes or if you don't have to deal with process killers in the bg. Also, the -m1 command to grep means stop grepping this file for matches after the first match, which also saves time. Show Sample Output
This is sample output - yours may be different.
```
Cpu(s): 28.1% us,  9.5% sy,  3.0% ni, 48.6% id,  9.9% wa,  0.2% hi,  0.7% si

  PID NI  %CPU %MEM  COMMAND
20707 19  0.0  0.1   sh -c S=askapache;R=htaccess;find . -type f|xargs -P5 -iFF grep -l -m1 "$S" FF|xargs -P5 -iFF sed -i -e s%${S}%${R}% FF
20708 19  2.0  0.0   find . -type f
20709 19  2.0  0.0   xargs -P5 -iFF grep -l -m1 askapache FF
20710 19  0.5  0.0   xargs -P5 -iFF sed -i -e s%askapache%htaccess% FF
23291 19  0.0  0.0   grep -l -m1 askapache ./servers/util_ldap_cache_mgr.c.html
23293 19  0.0  0.0   grep -l -m1 askapache ./servers/util_md5.c.html
23308 19  0.0  0.0   grep -l -m1 askapache ./servers/waitio.c.html
23310 19  0.0  0.0   grep -l -m1 askapache ./servers/winconfig.h.html
23311 19  0.0  0.0   grep -l -m1 askapache ./servers/wintty.c.html
23265 19  0.0  0.1   sed -i -e s%askapache%htaccess% ./servers/apr_uri.h.html
23266 19  0.0  0.0   sed -i -e s%askapache%htaccess% ./servers/apr_uri.c.html
23267 19  0.0  0.0   sed -i -e s%askapache%htaccess% ./servers/apr_time.h.html
23268 19  0.0  0.0   sed -i -e s%askapache%htaccess% ./servers/apr_user.h.html
23269 19  0.0  0.0   sed -i -e s%askapache%htaccess% ./servers/apr_strmatch.h.html
```
10

sh -c 'S=askapache R=htaccess; find . -mount -type f|xargs -P5 -iFF grep -l -m1 "$S" FF|xargs -P5 -iFF sed -i -e "s%${S}%${R}%g" FF'

AskApache · 2009-10-02 05:03:10 7
geoip information

Not my script. Belongs to mathewbauer. Used without his permission. This script gives a single line as shown in the sample output. NOTE: I have blanked out the IP address for obvious security reasons. But you will get whatever is your IP if you run the script. Tested working in bash. Show Sample Output
This is sample output - yours may be different.
```
IP: ***.***.*.** Location: new delhi, DELHI, India   (BHARTI INFOTEL LTD.)
```
10

curl -s "http://www.geody.com/geoip.php?ip=$(curl -s icanhazip.com)" | sed '/^IP:/!d;s/<[^>][^>]*>//g'

getkaizer · 2009-11-04 07:15:02 11
intercept stdout/stderr of another process

similar to the previous command, but with more friendly output (tested on linux)
This is sample output - yours may be different.
10

strace -ff -e write=1,2 -s 1024 -p PID 2>&1 | grep "^ |" | cut -c11-60 | sed -e 's/ //g' | xxd -r -p

systemj · 2010-04-23 16:22:17 4
Fetch every font from dafont.com to current folder

Requires aria2c but could just as easily wget or anything else. A great way to build up a nice font collection for Gimp without having to waste a lot of time. :-) Show Sample Output
This is sample output - yours may be different.
```
The current folder will fill with fonts :-)
```
10

d="www.dafont.com/alpha.php?";for c in {a..z}; do l=`curl -s "${d}lettre=${c}"|sed -n 's/.*ge=$[0-9]\{2\}$.*/\1/p'`;for((p=1;p<=l;p++));do for u in `curl -s "${d}page=${p}&lettre=${c}"|egrep -o "http\S*.com/dl/\?f=\w*"`;do aria2c "${u}";done;done;done

lrvick · 2010-05-18 07:38:54 4
Turns red the stderr output

Reference: http://stackoverflow.com/a/4455706 Show Sample Output
This is sample output - yours may be different.
```
color ls <non existent path>
```
10

color()(set -o pipefail;"$@" 2>&1>&3|sed $'s,.*,\e[31m&\e[m,'>&2)3>&1

bkmeneguello · 2013-01-30 13:42:03 7
Sort a one-per-line list of email address, weeding out duplicates
This is sample output - yours may be different.
9

sed 's/[ \t]*$//' < emails.txt | tr 'A-Z' 'a-z' | sort | uniq > emails_sorted.txt

jdunn · 2009-02-20 19:49:17 12
Processes by CPU usage
This is sample output - yours may be different.
9

ps -e -o pcpu,cpu,nice,state,cputime,args --sort pcpu | sed "/^ 0.0 /d"

fbparis · 2009-03-07 16:47:10 21
uncomment the lines where the word DEBUG is found
This is sample output - yours may be different.
9

sed '/^#.*DEBUG.*/ s/^#//' $FILE

svg · 2009-07-30 09:30:17 18
Get your external IP address
This is sample output - yours may be different.
9

curl -s 'http://checkip.dyndns.org' | sed 's/.*Current IP Address: $[0-9\.]*$.*/\1/g'

kulor · 2009-08-06 11:54:31 10
display an embeded help message from bash script header

With this one liner you can easily output a standard help message using the following convention: Usage: is the start marker Stop at the last # Show Sample Output
This is sample output - yours may be different.
```
#!/bin/bash
#
# Usage: do someting really funny
#  --help      This message
#  --force     force be stronger
#  --remove    delete whatyou've done, be CAREFULL
#
# ex:  myfun  dosomething
#
# myfun --force dosomething_REALLY_DO_IT
#

[ "$1" == "--help" ] && { sed -n -e '/^# Usage:/,/^$/ s/^# \?//p' < $0; exit; }

echo really funny !
```
9

[ "$1" == "--help" ] && { sed -n -e '/^# Usage:/,/^$/ s/^# \?//p' < $0; exit; }

syladmin · 2009-09-04 20:36:06 7
< 1 2 3 4 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

BourneShell: Go to previous directory

cd - would return to the previous directory of your cd command. NB: previous dir is always stored in $OLDPWD variable.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Stop Flash from tracking everything you do.

Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

Speaking alarm clock

This ran on a ubuntu box using espeak for speaking text with the bash shell. On a mac you should use 'say'. Also you can change your alarm interval and your snooze interval which are currently 8 hours and 1 minute. I would run this via cron yet it's easier to disable if you run it as a command like this :P

For a $FILE, extracts the path, filename, filename without extension and extension.

Useful for use in other scripts for renaming, testing for extensions, etc.

Convert diff output to HTML ins/del

Find the package that installed a command

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Print a row of characters across the terminal

shorter than alternative

The BOFH Excuse Server

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using sed

Commands using sed (1,319) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using sed (1,319)

sorted by