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awk, bash, curl, find, grep, Linux, sed
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Functions

All commands from sorted by
Terminal - All commands - 12,454 results
man 5 crontab
2009-09-03 19:27:08
User: 0disse0
Functions: man
1
Up
Down
Access to specific man page section

You can view the man pages from section five by passing the section number as an argument to the man command

Show sample output | Comments (8) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
function fcd () { [ -f $1 ] && { cd $(dirname $1); } || { cd $1 ; } pwd }
2009-09-03 18:58:13
User: relay
Functions: cd dirname pwd
Tags: bash ksh
1
Up
Down
bash/ksh function: given a file, cd to the directory it lives

fcd : file change directory

A bash function that takes a fully qualified file path and cd's into the directory where it lives. Useful on the commadline when you have a file name in a variable and you'd like to cd to the directory to RCS check it in or look at other files associated with it.

Will run on any ksh, bash, likely sh, maybe zsh.

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find . -type f -exec grep -qi 'foo' {} \; -print0 | xargs -0 vim
2009-09-03 17:55:26
User: arcege
Functions: find grep xargs
Tags: vim find grep
-1
Up
Down
Edit all files found having a specific string found by grep

Make sure that find does not touch anything other than regular files, and handles non-standard characters in filenames while passing to xargs.

Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
bash -x test.sh 2>&1 | tee out.test
2009-09-03 17:10:44
User: arcege
Functions: bash tee
Tags: tee file descriptor
4
Up
Down
Run a bash script in debug mode, show output and save it on a file

Sends both stdout and stderr to the pipe which captures the data in the file 'out.test' and sends to stdout of tee (likely /dev/tty unless redirected). Works on Bourne, Korn and Bash shells.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo $((3.0/5.0))
2009-09-03 16:35:09
User: andrew112358
Functions: echo
Tags: bc floating point
-8
Up
Down
floating point operations in shell scripts
Comments (7) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -exec grep foobar /dev/null {} \; | awk -F: '{print $1}' | xargs vi
2009-09-03 16:02:18
User: verboEse
Functions: awk find grep xargs
Tags: vim awk find grep
-1
Up
Down
Edit all files found having a specific string found by grep

needs no GNU tools, as far as I see it

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grep -ir 'foo' * | awk -F '{print $1}' | xargs vim
2009-09-03 15:58:47
User: verboEse
Functions: awk grep xargs
Tags: vim sed awk grep
0
Up
Down
Edit all files found having a specific string found by grep

saves one command. Needs GNU grep though :-(

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grep -Hrli 'foo' * | xargs vim
2009-09-03 15:44:05
User: dere22
Functions: grep xargs
Tags: vim sed awk grep
3
Up
Down
Edit all files found having a specific string found by grep

The grep switches eliminate the need for awk and sed. Modifying vim with -p will show all files in separate tabs, -o in separate vim windows. Just wish it didn't hose my terminal once I exit vim!!

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grep -ir 'foo' * | awk '{print $1}' | sed -e 's/://' | xargs vim
2009-09-03 15:12:27
User: elubow
Functions: awk grep sed xargs
Tags: vim sed awk grep
0
Up
Down
Edit all files found having a specific string found by grep

This will drop you into vim to edit all files that contain your grep string.

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file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -i x86_64 |nl |tail -1 |cut -f1 -f3 && file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -v x86_64 |nl |tail -1 |cut -f1 -f3
2009-09-03 14:28:02
User: commandlinefu
Functions: cut file grep nl tail
-1
Up
Down
How far is Mac OS X 10.6 from 64-bit?

Next time you see a mac fanboy bragging about 64-bitness of 10.6 give him this so he might sh?

Show sample output | Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
O=$IFS;IFS=$'\n'; D=$(for f in *;do [[ -d $f ]] && du -sh "$f";done | sort -gr);F=$(for f in *;do [[ -f $f ]] && du -sh "$f";done | sort -gr);IFS=$O;echo "$D";echo "$F"
2009-09-03 11:39:50
User: Viperlin
Functions: du sort
-3
Up
Down
Ultimate current directory usage command

biggest->small directories, then biggest->smallest files

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo sortmeplease|sed 's/./&\n/g'|sort|tr -d '\n'
2009-09-03 10:37:57
User: foob4r
Functions: echo sed tr
Tags: strings sorting
0
Up
Down
Sort a character string

another possibility

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ls -lct /etc | tail -1 | awk '{print $6, $7}'
2009-09-03 10:26:37
User: MrMerry
Functions: awk ls tail
10
Up
Down
When was your OS installed?

Show time and date when you installed your OS.

Show sample output | Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo sortmeplease | awk '{l=split($1,a,"");asort(a);while(x<=l){printf "%s",a[x];x++ }print "";}'
2009-09-03 10:22:39
User: foob4r
Functions: awk echo
Tags: strings sorting
-1
Up
Down
Sort a character string

using awk

missed the last char thanks @Josay

Show sample output | Comments (74) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo {1..199}" sheep," | espeak -v english -s 80
2009-09-03 10:08:12
User: MrMerry
Functions: echo
6
Up
Down
Let your computer lull you to sleep

Can change language and speed, see espeak man page for options. (Install espeak in your linux distro via yum or apt-get)

For insomniacs you may need to enclose in a while true; do ...; done loop ;)

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dd bs=1 seek=2TB if=/dev/null of=ext3.test
2009-09-03 08:35:20
User: Superhuman
Functions: dd
5
Up
Down
Create a large test file (taking no space).
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ls -shF --color
2009-09-03 05:45:33
User: Viperlin
Functions: ls
-3
Up
Down
Ultimate current directory usage command

use manpages, they give you "ultimate commands"

"ls -SshF --color" list by filesize (biggest at the top)

"ls -SshFr --color" list by filesize in reverse order (biggest at the bottom)

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sudo dscl localhost -append /Local/Default/Groups/admin GroupMembership username
2009-09-03 04:40:10
User: kulor
Functions: sudo
Tags: unix osx mac dscl group users
0
Up
Down
Add user to group on OS X 10.5

adding users to groups on OS X is not a straightforward process, you need to use the new in built in Directory Service command line utility...

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echo sortmeplease | grep -o . | sort | tr -d '\n'; echo
2009-09-03 00:52:49
User: MrMerry
Functions: echo grep sort tr
1
Up
Down
Sort a character string

Sorts a character string, using common shell commands.

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echo "5 k 3 5 / p" | dc
2009-09-03 00:21:54
User: xamaco
Functions: echo
Tags: bc floating point dc
2
Up
Down
floating point operations in shell scripts

using bc is for sissies. dc is much better :-D

Polish notation will rule the world...

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find ~/Library/Application\ Support/Firefox/ -type f -name "*.sqlite" -exec sqlite3 {} VACUUM \;
2009-09-02 23:12:13
User: stanishjohnd
Functions: find
Tags: unix firefox optimize sqlite
1
Up
Down
Cleanup firefox's database.

For Mac OS X users only

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
nmap -R -sL 209.85.229.99/27 | awk '{if($3=="not")print"("$2") no PTR";else print$3" is "$2}' | grep '('
2009-09-02 16:33:15
User: netsaint
Functions: awk grep
Tags: nmap dns
4
Up
Down
List of reverse DNS records for a subnet

This command uses nmap to perform reverse DNS lookups on a subnet. It produces a list of IP addresses with the corresponding PTR record for a given subnet. You can enter the subnet in CDIR notation (i.e. /24 for a Class C)). You could add "--dns-servers x.x.x.x" after the "-sL" if you need the lookups to be performed on a specific DNS server.

On some installations nmap needs sudo I believe. Also I hope awk is standard on most distros.

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bc -l <<< s(3/5)
2009-09-02 15:41:39
User: akg240
Functions: bc
Tags: bc floating point
3
Up
Down
floating point operations in shell scripts

-l auto-selects many more digits (but you can round/truncate in your head, right) plus it loads a few math functions like sin().

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awk '/d.[0-9]/{print $4}' /proc/partitions
2009-09-02 15:26:03
User: akg240
Functions: awk
3
Up
Down
list all hd partitions

Only one command and not dependant on full read access to the devices.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
fdisk -l |grep -e '^/' |awk '{print $1}'|sed -e "s|/dev/||g"
2009-09-02 13:03:04
User: opexxx
Functions: awk fdisk grep sed
0
Up
Down
list all hd partitions
Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate