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May 19, 2015 - A Look At The New Commandlinefu
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awk, bash, curl, find, grep, Linux, sed
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Functions

All commands from sorted by
Terminal - All commands - 12,453 results
watch "ps auxw | grep 'defunct' | grep -v 'grep' | grep -v 'watch'"
2009-08-11 12:22:13
User: coffeeaddict_nl
Functions: watch
Tags: grep watch ps defunct
5
Up
Down
Get a regular updated list of zombies

Shows all those processes; useful when building some massively forking script that could lead to zombies when you don't have your waitpid()'s done just right.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
awk -F ',' '{ x = x + $4 } END { print x }' test.csv
2009-08-11 12:10:33
User: coffeeaddict_nl
Functions: awk
Tags: awk column CSV sum
8
Up
Down
Sum columns from CSV column $COL
Comments (79) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
php -r phpinfo();
2009-08-11 07:00:51
User: amaymon
Tags: PHP
2
Up
Down
Testing php configuration

Run the function phpinfo() on the shell

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo "<?php phpinfo(); ?>" >> /srv/www/htdocs/test.php
2009-08-11 05:56:25
User: userevolution
Functions: echo
-3
Up
Down
Testing php configuration

http://localhost/test.php

Comments (8) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
exiv2 rename *.jpg
2009-08-10 22:11:19
User: unixmonkey5069
Functions: rename
1
Up
Down
Picture Renamer
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -name '*'.tiff -exec bash -c "mogrify -format jpg -quality 85 -resize 75% {} && rm {}" \;
2009-08-10 18:27:10
User: erlebnishengst
Functions: bash find
4
Up
Down
Recursively Find Images, Convert to JPEGS and Delete

Simple command to convert a large number of images into jpeg-format. Will delete originals after conversion.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -name \*.pdf -exec pdfinfo {} \; | grep Pages | sed -e "s/Pages:\s*//g" | awk '{ sum += $1;} END { print sum; }'
2009-08-10 16:28:24
User: unixmonkey3987
Functions: awk find grep sed sum
3
Up
Down
Count the number of pages of all PDFs in current directory and all subdirs, recursively
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ipconfig getifaddr <Interface>
2009-08-10 15:04:44
User: commandlinefu
0
Up
Down
Get Interface's IP on Mac
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
du -hd 1
2009-08-10 13:11:22
User: Tuirgin
Functions: du
Tags: disk usage osx
3
Up
Down
Get the size of all the directories in current directory

OSX's BSD version of the du command uses the -d argument instead of --max-depth.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl http://www.commandlinefu.com/commands/by/<your username>/rss|gzip ->commandlinefu-contribs-backup-$(date +%Y-%m-%d-%H.%M.%S).rss.gz
2009-08-10 12:43:33
User: linuxrawkstar
Functions: date gzip
Tags: backup curl date gzip commandlinefu zless
10
Up
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back up your commandlinefu contributed commands

Use `zless` to read the content of your *rss.gz file:

zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz
Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
jhead -n%Y%m%d-%H%M%S *.jpg
2009-08-10 03:49:30
User: sitaramcUnused
4
Up
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Picture Renamer

jhead is a very nice tool to do all sorts of things with photographs, in a batch-oriented way. It has a specific function to rename files based on dates, and the format I used above was just an example.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ls -1 *.jpg | while read fn; do export pa=`exiv2 "$fn" | grep timestamp | awk '{ print $4 " " $5 ".jpg"}' | tr ":" "-"`; mv "$fn" "$pa"; done
2009-08-10 00:52:22
User: axanc
Functions: awk export grep ls mv read tr
0
Up
Down
Picture Renamer

Renames all the jpg files as their timestamps with ".jpg" extension.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
old='apt-get'; new="su-${old}"; command="sudo ${old}"; alias "${new}=${command}"; $( complete | sed -n "s/${old}$/${new}/p" ); alias ${new}; complete -p ${new}
2009-08-10 00:15:05
User: Josay
Functions: alias sed
Tags: bash alias completion aliases
4
Up
Down
Define an alias with a correct completion

In Bash, when defining an alias, one usually loses the completion related to the function used in that alias (that completion is usually defined in /etc/bash_completion using the complete builtin).

It's easy to reuse the work done for that completion in order to have smart completion for our alias.

That's what is done by this command line (that's only an example but it may be very easy to reuse).

Note 1 : You can use given command line in a loop "for old in apt-get apt-cache" if you want to define aliases like that for many commands.

Note 2 : You can put the output of the command directly in your .bashrc file (after the ". /etc/bash_completion") to always have the alias and its completion

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
for f in *.eps;do ps2pdf -dEPSCrop $f `basename $f .eps`.pdf; done
2009-08-09 20:58:07
User: rader5
1
Up
Down
Convert every eps in a directory to pdf

Converts every *.eps file to a *.pdf file

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
perl -p -i -e 's/this/that/g' filename
2009-08-09 20:53:50
User: rader5
Functions: perl
2
Up
Down
Replace Every occurrence of a word in a file

Replace 'this' with 'that'

Comments (5) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
column -t /proc/mounts
2009-08-09 17:00:41
User: unixmonkey5049
Functions: column
Tags: Filesystem mount column
10
Up
Down
currently mounted filesystems in nice layout

since fuse mounts do not appear in /etc/mtab (fuse can't write there, dunno if it would if it could) this is propably a better way.

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
FECHA=$(date +"%F") FINAL="$FECHA.sql.gz" mysqldump -h localhost -u user --password="pass" --opt jdiaz61_lupajuridica | gzip > /home/jdiaz61/www/backup/$FINAL
2009-08-09 14:51:46
User: juancabo
Functions: date gzip
-2
Up
Down
Script para hacer un acopia d ela base de datos mysql

Tres lineas en un shell script para copiar la base de datos diaramente

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
iconv --from-code=ISO-8859-1 --to-code=UTF-8 iso.txt > utf.txt
2009-08-09 14:22:09
User: jsiei97
Functions: iconv
3
Up
Down
Convert one file from ISO-8859-1 to UTF-8.

Nothing fancy it just converts one file from one character encoding into another one.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
grep . filename
2009-08-09 05:33:58
User: TheMightyBuzzard
Functions: grep
Tags: Linux grep
7
Up
Down
Remove newlines from output

Remove newlines from output.

One character shorter than awk /./ filename and doesn't use a superfluous cat.

To be fair though, I'm pretty sure fraktil was thinking being able to nuke newlines from any command is much more useful than just from one file.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl www.whatismyip.com/automation/n09230945.asp
2009-08-09 04:08:41
User: dunka
1
Up
Down
Get your external IP address if your machine has a DNS entry

Easy way to see your real external IP

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
update-java-alternatives
2009-08-09 02:43:06
User: stuart
Tags: Debian Ubuntu
2
Up
Down
Update program providing java on Debian

Lets you set all the java alternatives at once to a matching version. Also has options for just changing the jre or the plugin.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
git add --patch <filename>
2009-08-09 02:24:43
User: stuart
Tags: git SCM
4
Up
Down
Stage only portions of the changes to a file.
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo strings /dev/mem
2009-08-09 02:07:26
User: point_to_null
Functions: strings sudo
Tags: Linux ram strings /dev/mem
27
Up
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A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram

cat? dd? RTFM

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dig +short $HOSTNAME
2009-08-09 02:05:38
User: stuart
Functions: dig
4
Up
Down
Get your external IP address if your machine has a DNS entry
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
awk /./ filename
2009-08-09 02:04:46
User: point_to_null
Functions: awk
Tags: awk
1
Up
Down
Remove newlines from output

?Cat and grep? You can use only grep ("grep \. filename"). Better option is awk.

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate