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2011-03-12 - Confoo 2011 presentation
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Terminal - All commands - 10,556 results
find . -name 'spam-*' |xargs rm;find . -name 'spam-*' -print0 | xargs -0 rm
2011-01-22 06:46:21
User: mancipar
Functions: find xargs
-4
Up
Down
/bin/rm: Argument list too long.

root@wow/var/spool/clientmqueue # rm spam-*

/bin/rm: Argument list too long.

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count=0;while IFS= read -r -d '' line; do echo "${line#* }"; ((++count==5)) && break; done < <(find . -type f -printf '%s %p\0' | sort -znr)
2013-03-19 17:19:26
User: sharfah
Functions: echo find read sort
Tags: sort find head,
-4
Up
Down
Find top 5 big files

This command is more robust because it handles spaces, newlines and control characters in filenames. It uses printf, not ls, to determine file size.

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lastfile () { find ${1:-.} -maxdepth 1 -type f -printf "%T+ %p\n" | sort -n | tail -n1 | sed 's/[^[:space:]]\+ //'; }
2011-10-17 16:08:02
User: bartonski
Functions: find sed sort tail
-4
Up
Down
Show the single most recently modified file in a directory

Takes a directory name as an argument (defaults to current directory if no arguments are given). Prints the newest file in the directory.

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date | md5sum
2010-09-28 20:20:17
User: yababay
Functions: date
Tags: tr fold
-4
Up
Down
Generate a random password 32 characters long :)
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dd if=/dev/sdX of=/root/sdX.bin bs=1M count=1
2009-02-06 17:45:59
User: dhing
Functions: dd
-4
Up
Down
Backup the first 1MB of your volume

This will copy the first 1MB of your /dev/sdX volume to your /root/sdX.bin file, where SDX is the name of the device you wish to copy the data from (Usually a hard disk)

NOTE: Make sure you capitalize the M in field for BS.

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echo $SHELL
2011-02-25 14:30:41
User: God
Functions: echo
-4
Up
Down
Figure out what shell you're running
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cp -a /etc /destination
2011-10-17 16:42:35
User: linuxrawkstar
Functions: cp
-4
Up
Down
Real full backup copy of /etc folder
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ps ax > processes && cat processes | egrep "*.exe |*exe]" | awk '{ print $1 }' > pstokill && kill $(cat pstokill) && rm processes && rm pstokill
2011-02-26 16:13:58
User: sxiii
Functions: awk cat egrep kill ps rm
Tags: kill wine exe
-4
Up
Down
kill all running instances of wine and programs runned by it (exe)

This command kills all wine instances and each EXE application working on a PC.

Here is command info:

1) ps ax > processes = save process list to file named "processes" (we save it because we don't wont egrep to be found in the future)

2) cat processes | egrep "*.exe |*exe]" = shows the file "processes" and after greps for each *.exe and *exe] in it

3) | awk '{ print $1 }' > pstokill = saves processes PID's to file "pstokill" using awk filter

4) kill $(cat pstokill) = kills each PID in file pstokill, which is shown by cat program

5) rm processes && rm pstokill = removes temporary files

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sed '/^$/d' file >newfile
2009-09-24 19:22:49
User: haplo
Functions: file sed
-4
Up
Down
Remove blank lines from a file and save output to new file
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
less file.ext
2011-09-13 10:29:27
User: totti
Functions: less
Tags: less text search
-4
Up
Down
Common key binding for 'less' to search for a string

Use the following key binding to search

----------------------------------------------------------------

ng

: Jump to line number n. Default is the start of the file.

nG

: Jump to line number n. Default is the end of the file.

/pattern

: Search for pattern. Regular expressions can be used. [/ = slash] Press / and then Enter to repeat the previous search pattern. Press ESC and then u to undo search highlighting.

n

: Go to next match (after a successful search).

N

: Go to previous match.

mletter

: Mark the current position with letter.

'letter

: Return to position letter. [' = single quote]

'^ or g

: Go to start of file.

'$ or G

: Go to end of file.

s

: Save current content (got from another program like grep) in a file.

= or Ctrl+g

: File information.

F

: continually read information from file and follow its end. Useful for logs watching. Use Ctrl+c to exit this mode.

-option

: Toggle command-line option -option.

h

: Help.

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tar -C <source_dir> -cf . | tar -C <dest_dir> -xf
2009-07-08 22:19:04
User: Tekhne
Functions: tar
Tags: files
-4
Up
Down
Move files around local filesystem with tar without wasting space using an intermediate tarball.
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:!>test.txt
2009-08-19 13:45:23
User: amaymon
Tags: vim vi
-4
Up
Down
Emptying a text file in one shot in VIM
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ip a
2012-09-20 01:44:58
User: huazhihao
-4
Up
Down
show ip
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vim anything.tar
2013-05-14 08:20:16
User: redy
Functions: vim
Tags: vim tar
-4
Up
Down
Inspect content of a tar file with vim
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perl -e 'print crypt("PASSWORD",int(rand(128))).$/;'
2010-09-30 12:58:39
User: cicatriz
Functions: perl
-4
Up
Down
Creating a pseudo-random password
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wget -q -O- http://www.gutenberg.org/dirs/etext96/cprfd10.txt | sed '1,419d' | tr "\n" " " | tr " " "\n" | perl -lpe 's/\W//g;$_=lc($_)' | grep "^[a-z]" | awk 'length > 1' | sort | uniq -c | awk '{print $2"\t"$1}'
2009-05-04 16:00:39
User: alperyilmaz
Functions: awk grep perl sed sort tr uniq wget
Tags: sort perl sed awk uniq wget tr
-4
Up
Down
count occurences of each word in novel David Copperfield

This command might not be useful for most of us, I just wanted to share it to show power of command line.

Download simple text version of novel David Copperfield from Poject Gutenberg and then generate a single column of words after which occurences of each word is counted by sort | uniq -c combination.

This command removes numbers and single characters from count. I'm sure you can write a shorter version.

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grep '' -m X file1 > file2
2009-03-22 04:34:43
User: sardanapalos
Functions: grep
-4
Up
Down
extract a certain number of lines from a file and dump them to another file

It extracts X number of lines from file1 and dumps them to file2.Using grep with the empty string '' extracts the complete lines (i.e. no filtering takes place) and the -m flag indicates how many lines to extract out from the given file. Then using the redirect > operator we send the extracted lines to a new file.

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wget -q -O - www.myip.cn | grep -Po "(\d+\.){3}\d+" -m 0
2012-11-22 06:53:42
User: huazhihao
Functions: grep wget
-4
Up
Down
show WAN IP
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while (( $i != 0 )) { smbstatus; sleep 5; clear }
2009-06-03 13:26:30
User: unixmonkey4084
Functions: clear sleep
Tags: unix samba zsh
-4
Up
Down
See smbstatus all the time

See smbstatus Output within a 5 second interval (for monitoring smb access)

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svn status app/models/foo.rb; svn commit -m "Changed file" !$
2009-03-22 23:14:06
User: ggoodale
Tags: bash shortcut global
-4
Up
Down
!$ - The last argument to the previous command

After a command is run in bash, !$ is set to the last (space-delimited) argument of the command. Great for running several commands against the same file in a row.

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sh default values
2010-03-26 02:36:57
User: rootgeek
Functions: sh
Tags: foundry
-4
Up
Down
Display default values on Foundry (Brocade) RX and MLX BigIron L3 (routers & switches)
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PID=httpd ; ps aux | grep $PID | grep -v grep | awk '{print $2}' | xargs kill -9
2012-02-21 23:27:47
User: esaenz
Functions: awk grep kill ps xargs
-4
Up
Down
kill all pids from $PID

# define user pid to kill

PID=httpd ;

# kill all pids

ps aux | grep $PID | grep -v grep | awk '{print $2}' | xargs kill -9

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if lynx --dump http://twitter.com/xmuda | grep -q "Sorry, that page does"; then echo "Dont Exist"; else echo "Exist"; fi
2013-03-23 16:12:24
User: xmuda
Functions: echo grep
-4
Up
Down
Twitter Account Validator

I use these command to validate twitter accounts, we can use a "for a in $(cat list.txt)" to validate a complete list of twitter accounts.

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dm ?
2010-03-26 02:42:21
User: rootgeek
Tags: foundry
-4
Up
Down
Dispaly a bunch of Info. on Foundry (Brocade) RX and MLX BigIron L3 (routers & switches)

The sample output, is the command with a ?, to show you all the stuff you can look at.

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Place a filename at the beginning of the line to make it easier to edit the search at the end of the command.
2009-02-07 12:03:19
User: iveney
Functions: at make
-4
Up
Down
Place a filename at the beginning of the line to make it easier to edit the search at the end of the command. Place a filename at the beginning of the line to make it easier to edit the search at the end of the command.
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