Commands using grep sorted by votes

Commands using grep (1,935)

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Find the uid and gid of your apache process

This command allows you to find the effective uid and gid of the Apache process regardless of process name (which can be apache2 or httpd depending on distro).
This is sample output - yours may be different.
-1

ps -o euid,egid --ppid `netstat --inet --inet6 -pln|awk '/:80 / { split($7,tmp, "/"); print tmp[1]; }'`|sort |uniq|grep -v EUID

chx · 2010-11-18 21:22:29 2
get memory configuration (not consumption) for all running VMware virtual machines

So your boss wants to know how much memory has been assigned to each virtual machine running on your server... here's how to nab that information from the command line while logged in to that server Show Sample Output
This is sample output - yours may be different.
```
              aa.devel.mydomain.com.vmx: 1024 M
                 devel.mydomain.com.vmx: 2048 M
                   ftp.mydomain.com.vmx: 256 M
                  mail.mydomain.com.vmx: 256 M
                         testdotnet.vmx: 3072 M
                          testjava2.vmx: 3072 M
                          testjava3.vmx: 3072 M
                           testjava.vmx: 3072 M
                   web.mydomain.com.vmx: 256 M
                              rhel5.vmx: 2048 M
```
-1

for file in $( vmrun list | grep 'vmx$' | sort ); do printf "% 40s %s M\n" $(echo "$( echo -n ${file}:\ ; grep memsize $file )" | sed -e 's/.*\///' -e 's/"//g' -e 's/memsize.=//'); done;

linuxrawkstar · 2010-11-19 06:14:11 3
print a cpu of a process
This is sample output - yours may be different.
-1

ps -eo args,%cpu | grep -m1 PROCESS | tr 'a-z-' ' ' | awk '{print $1}'

lin72 · 2010-11-29 17:43:52 4
find names of files ending in *log that have both foo and bar

Uses xargs to call the second grep with the first grep's results as arguments
This is sample output - yours may be different.
-1

grep -l bar *.log | xargs grep -l foo

dlebauer · 2011-01-10 19:54:46 3
Search through files, ignoring .svn

Unless you have files that include 'svn' in them, this should provide enough information to be useful. If you need to be certain, add the leading dot in the search pattern
This is sample output - yours may be different.
-1

find . | grep -v svn

gwchamb · 2011-01-16 03:51:57 4
Fetch current song from last.fm
This is sample output - yours may be different.
-1

curl -s http://www.last.fm/user/$LASTFMUSER | grep -A 1 subjectCell | sed -e 's#<[^>]*>##g' | head -n2 | tail -n1 | sed 's/^[[:space:]]*//g'

sn0opy · 2011-01-24 08:16:48 3
turn off all services in specific runlevel

works in fedora, centos and presumably other distros that use chkconfig
This is sample output - yours may be different.
-1

for i in $(chkconfig --list | grep "4:on" | awk {'print $1'}); do chkconfig --level 4 "$i" off; done

m1cawber · 2011-01-25 03:54:43 6
find the device when you only know the mount point

less ressources (processes) needed Show Sample Output
This is sample output - yours may be different.
```
/dev/sdc1
```
-1

grep -w /media/KINGSTON /proc/mounts | cut -d " " -f

BorneBjoern · 2011-01-25 23:45:35 3
Find artist and title of a music cd, UPC code given (first result only)

Substitute that 724349691704 with an UPC of a CD you have at hand, and (hopefully) this oneliner should return the $Artist - $Title, querying discogs.com. Yes, I know, all that head/tail/grep crap can be improved with a single sed command, feel free to send "patches" :D Enjoy! Show Sample Output
This is sample output - yours may be different.
```
Iron Maiden - Killers
```
-1

wget http://www.discogs.com/search?q=724349691704 -O foobar &> /dev/null ; grep \/release\/ foobar | head -2 | tail -1 | sed -e 's/^<div>.*>$.*$<\/a><\/div>/\1/' ; rm foobar

TetsuyO · 2011-01-30 23:34:54 3
Root Security

This will tighten up security for your box. The default value for PermitRootLogin sadly is 'yes'.
This is sample output - yours may be different.
-1

s=/etc/ssh/sshd_config;r=PermitRootLogin;cp $s{,.old}&& if grep $r $s;then sed "s/$r yes/$r no/" $s.old > $s; else echo $r no >> $s;fi

kzh · 2011-01-30 23:41:59 11
find the device when you only know the mount point
This is sample output - yours may be different.
-1

mount | grep "mount point"

mimivx · 2011-01-31 10:21:09 2
Download Entire YouTube Channel - all of a user's videos
This is sample output - yours may be different.
-1

yt-chanrip() { for i in $(curl -s http://gdata.youtube.com/feeds/api/users/"$1"/uploads | grep -Eo "watch\?v=[^[:space:]\"\'\\]{11}" | uniq); do youtube-dl --title --no-overwrites http://youtube.com/"$i"; done }

AceSilvershadow · 2011-02-02 01:12:26 4
delete a file and links based on inode number.

This command, when run from the directory containing "filename", will remove the file and any hard or symbolic links to the file.
This is sample output - yours may be different.
-1

ls -ai | grep filename | find . -inum `awk '{print $1}'` -exec rm {} \;

YogiBare · 2011-02-04 10:29:54 7
Check default block size on ext2/ext3 filesystems

the result of the command helped a check the Maximum file size and Maximum file system size. EXT3 Exemple: Block size; MAX File size; Maximum file system size 1 KiB; 16 GiB ; 2 TiB 2 KiB ; 256 GiB ; 8 TiB 4 KiB ; 2 TiB ; 16 TiB 8 KiB[limits 1]; 2 TiB; 32 TiB Show Sample Output
This is sample output - yours may be different.
```
root@zappa:/tmp# tune2fs -l /dev/sda6 | grep -w ^"Block size:"
Block size:               4096
```
-1

tune2fs -l /dev/XXXX | grep -w ^"Block size:"

ncaio · 2011-02-10 16:39:14 3
Clean-up release directories keeping the only the latest two

Deletes capistrano-style release directories (except that there are dashes between the YYYY-MM-DD) Show Sample Output
This is sample output - yours may be different.
```
user@server:~/apps/appname/releases$ ls
2010-12-02-121502  2010-12-01-215457
```
-1

find . -maxdepth 1 -type d | grep -Pv "^.$" | sort -rn --field-separator="-" | sed -n '3,$p' | xargs rm -rf

wilmoore · 2011-03-08 17:38:26 6
this svn script will commit all files excluding those with extensions {.project .classpath .properties .sh .number} and those with Status Modified or Added {M or A}
This is sample output - yours may be different.
-1

svn st | grep -e [MA] | egrep -ve '.project|.classpath|.properties|.sh|.number' | awk -F' ' '{ print $2}' | xargs svn ci -m "message"

drunkcoder · 2011-03-10 15:32:36 6
List Seeon.tv Available Video Channels

This shows a list of channels from seeon.tv website to watch shows and movies
This is sample output - yours may be different.
-1

lynx --dump http://www.seeon.tv/channels| grep "/channels"|awk '{print $2}'|sort -u|while read links; do lynx --dump "$links"|awk '/view/ {print $2}'|sort -u; done

Bonster · 2011-04-01 05:58:20 5
view someone's twitter stream from terminal
This is sample output - yours may be different.
-1

grabtweets() { curl -s -o $GT_TMP twitter.com/$1 | cat $GT_TMP | grep entry-content | sed -e :loop -e 's/<[^>]*>//g;/</N;//bloop' | sed 's/^[ \t]*//'; }

gl101 · 2011-05-04 21:49:08 5
convert chrome html export to folders, links and descriptions

chrome only lets you export in html format, with a lot of table junk, this command will just export the titles of the links and the links without all that extra junk Show Sample Output
This is sample output - yours may be different.
```
<h3>search engines</h3>
<a href="http://google.com/">google search engine</a>
```
-1

grep -E '<DT><A|<DT><H3' bookmarks.html | sed 's/<DT>//' | sed '/Bookmarks bar/d' | sed 's/ ADD_DATE=\".*\"//g' | sed 's/^[ \t]*//' | tr '<A HREF' '<a href'

chrismccoy · 2011-05-26 22:21:01 8
Find redirection and grep

You can find every file with png extension and redirect its output to file. Later you can find a string inside the file.
This is sample output - yours may be different.
-1

find . -name "*.png" | tee images.txt | grep book

wilbercarmona · 2011-06-02 23:55:50 4
Count the number of queries to a MySQL server

Counts Mysql Threads mysql switches -N skip column names (remove headers) -s silent mode (removes separator chars) -r raw output -e execute grep switches -c count lines -v invert match (match all except) Show Sample Output
This is sample output - yours may be different.
```
36
```
-1

mysql -uUser -pPassword -N -s -r -e 'SHOW PROCESSLIST' | grep -cv "SHOW PROCESSLIST"

lextoumbourou · 2011-06-10 13:00:53 5

Clone all remote branches of a specific GitHub repository

-1

git branch -a | grep "remotes/origin" | grep -v master | awk -F / '{print $3}' | xargs -I % git clone -b % git://github.com/jamesotron/DevWorld-2010-Cocoa-Workshop %

evandrix · 2011-06-29 00:13:47 3

Count the lines of source code in directory, ignoring files in generated by svn

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. Show Sample Output
This is sample output - yours may be different.
```
123 ./src/java/com/company/app/service/Foo.java
 42 ./test/java/com/company/app/service/FooTests.java
165 total
```
-1

find . -name '*.java' -o -name '*.xml' | grep -v '\.svn' | xargs wc -l

ewilson · 2011-06-30 12:45:40 5
Find most used focal lengths in a directory of photos

First column is number of photos, second column is the focal length. Show Sample Output
This is sample output - yours may be different.
```
     17 17.0
      2 47.0
      1 50.0
      4 53.0
      6 78.0
      3 85.0
```
-1

exiv2 *JPG | grep Focal | awk '{print $5}' | sort -n | uniq -c

ivanatora · 2011-07-05 11:25:29 8
Lookaround in grep

tutorial @ http://www.regular-expressions.info/lookaround.html also see @ http://stackoverflow.com/questions/5080988/how-to-extract-string-following-a-pattern-with-grep-regex-or-perl for tip: `grep -Po 'name="\K.*?(?=")' file.txt` Show Sample Output
This is sample output - yours may be different.
```
$ John
```
-1

echo "John's" | grep -Po '\b\w+(?<!s)\b'

evandrix · 2011-07-15 12:08:18 6
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Network traffic on NICs in mbps without sar, iperf, etc...

Need output in mbps (bits) # ./bytes-second.sh eth0 eth0 interface maximum Speed: 1000Mb/s RX:12883212 TX:17402002 B/s | RX:98 TX:132 Mb/s RX:12371647 TX:17830111 B/s | RX:94 TX:136 Mb/s RX:12502750 TX:17860915 B/s | RX:95 TX:136 Mb/s

DVD ripping with ffmpeg

To rip DVD movie to ogg format using ffmpeg, follow these steps. 1) find the vob files on the mounted video DVD in VIDEO_TS that stores the movie itself. There would be a few other VOB files that stores splash screen or special features, the vob files for the movie itself can be identified by its superior size. You can verify these vob files by playing them directly with a player (e.g. mplayer) 2) concatenate all such vob files, pipe to ffmpeg 3) calculate the video size and crop size. The ogg video size must be multiple of 16 on both width and height, this is inherit limitation of theora codec. In my case I took 512x384. The -vcodec parameter is necessary because ffmpeg doesn't support theora by itself. -acodec is necessary otherwise ffmpeg uses flac by default.

Changes standard mysql client output to 'less'.

Changes standard mysql client output to 'less'. In another words makes query results of mysql command line client to look much better.

Send a local file via email

Another way of sending an attachment. -s : subject file : file to be sent

Remove all files except list

Jump to a directory, execute a command and jump back to current dir

Runs previous command replacing foo by bar every time that foo appears

Very useful for rerunning a long command changing some arguments globally. As opposed to ^foo^bar, which only replaces the first occurrence of foo, this one changes every occurrence.

Add "prefix" on a buch of files

Go up multiple levels of directories quickly and easily.

Change to your taste. Much quicker than having to add 'cd' every time. Add it to your .bashrc or .bash_profile.

View webcam output using mplayer

View webcam output using mplayer, with correct fps and outfmt settings according to my webcam model.

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Commands using grep (1,935)

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