Commands using sed sorted by votes

Commands using sed (1,319)

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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 ›

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Create the oauth token required for a Twitter stream feed

This is the THIRD in a set of five commands. See my other commands for the previous two. This step creates the oauth 1.0 token as explained in http://oauth.net/core/1.0/ The token is required for a Twitter filtered stream feed (and almost all Twitter API calls) This token is simply an encrypted version of your base string. The encryption key used is your hmac. The last part of the command scans the Base64 token string for '+', '/', and '=' characters and converts them to percentage-hex escape codes. (URI-escapeing). This is also a good example of where the $() syntax of Bash command substitution fails, while the backtick form ` works - the right parenthesis in the case statement causes a syntax error if you try to use the $() syntax here. See my previous two commands step1 and step2 to see how the base string variable $b and hmac variable $hmac are generated.

Wrap text files on the command-line for easy reading

fold wraps text at 80 characters wide, and with the -s flag, only causes wrapping to occur between words rather than through them.

Eavesdrop on your system

This command takes a snapshot of the open files for a PID 1234 then waits 10 seconds and takes another snapshot of the same PID, it then displays the difference between each snapshot to give you an insight into what the application is doing.

Display the top ten running processes - sorted by memory usage

ps returns all running processes which are then sorted by the 4th field in numerical order and the top 10 are sent to STDOUT.

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"

Check the current price of Bitcoin in USD

list files recursively by size

Ping sweep without NMAP

Waits for all pings to complete and returns ip with mac address

make directory with current date

Realtime lines per second in a log file

Using tail to follow and standard perl to count and print the lps when lines are written to the logfile.

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Commands using sed (1,319)

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