All commands

user@machine:~$ strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
XhJjKL07KNZSDDpwdPm9rACnW3FR0w

for file in `ls *.pdf`; do convert -verbose -colorspace RGB -resize 800 -interlace none -density 300 -quality 80 $file `echo $file | sed 's/\.pdf$/\.jpg/'`; done
"gs" -q -dQUIET -dPARANOIDSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=0 "-sDEVICE=pnmraw" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r300x300"  "-sOutputFile=/tmp/magick-XXz6cMMo" "-f/tmp/magick-XX9DNL7g" "-f/tmp/magick-XXPGU3s9"

Intel ACPI Component Architecture
AML Disassembler version 20061109 [May 16 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file dsdt.dat
Acpi table [DSDT] successfully installed and loaded
Pass 1 parse of [DSDT]
Pass 2 parse of [DSDT]
Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
.................................................................................................................................................................................................................................................................................................................................
Parsing completed
Disassembly completed, written to "dsdt.dsl"

MEncoder 2:1.0~rc2-0ubuntu17+medibuntu1 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 4, Stepping: 3)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0  data: 0x0 - 0x2bbb8000
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
Generating Index: 43%

|-Comics
   |---Anomaly
   |---Cyanide & Happiness
   |---Dilbert
   |---Misc
   |---Pearls Before Swine
   |---Russell's Teapot
   |---xkcd
   |-Docks
   |---Niqu Dock 1.2
   |-----2D Style
   |-----3D Style
   |-----Defaults
   |---Rounded Reflection
   |-Ebooks
   |---The Guitarist's Guide to Composing and Improvising

170M    Richard Stevens TCP-IP Illustrated Vol 2.pdf
153M    Richard_Stevens_UNIX_Network_Programming_Sec_Ed_Vol_1.pdf
126M    Rederik_Smith_Full_Docs_FreeBSD_rus.pdf
117M    WhiteParus.Unix.Rukovodstvo_Sysadmina.pdf
115M    Richard_Stevens_Advanced_Programming_in_the_UNIX_Environment.pdf
89M Richard Stevens Tcp-Ip Illustrated Vol 1.pdf
80M Richard_Stevens_UNIX_Network_Programming_Sec_Ed_Vol_2.pdf
73M IEEE
22M tannenbaum

view this page source to copy perl command.

====================
== make alias

$ cat alias.txt # this line is too long to post Command-line-fu
perl -MHTML::Form -MLWP::UserAgent -e'$a=LWP::UserAgent->new;push@{$a->{requests_redirectable}},"POST";$u="http://www.commandlinefu.com/commands/browse";$f=HTML::Form->parse($a->get($u)->content,$u);$f->value(q=>join" ",@ARGV);for($a->request($f->click)->content=~m!<div class="one-liner">(.+?)(?=<div class="one-liner">|</html>)!sg){($s)=m!<div class="summary".+?>(.+?)<!s;($_)=m!<div class="command">\s*(.*?)<!s;s/</</g;s/>/>/g;s/"/"/g;s/&/&/g;print"### $s\n$_\n\n";++$n>7&&last}'

$ alias clgrep=`cat alias.txt`

====================
== grep the archive about "backup"

$ clgrep backup
### quickly backup or copy a file with bash
cp filename{,.bak}

### infile search and replace on N files (including backup of the files)
perl -pi.bk -e's/foo/bar/g' file1 file2 fileN

### backup directory. (for bash)
cp -pr directory-you-want-to-backup{,_`date +%Y%m%d`} # for bash

$ 

====================
== grep the archive about "wget"

$ clgrep wget
### Download all images from a site
wget -r -l1 --no-parent -nH -nd -P/tmp -A".gif,.jpg" http://example.com/images

### Extract tarball from internet without local saving
wget -qO - "http://www.tarball.com/tarball.gz" | tar zxvf -

### Echo the latest commands from commandlinefu on the console
wget -O - http://www.commandlinefu.com/commands/browse/rss 2>/dev/null | awk '/\s*<title/ {z=match($0, /CDATA\[([^\]]*)\]/, b);print b[1]} /\s*<description/ {c=match($0, /code>(.*)<\/code>/, d);print d[1]"\n"} '

### Get My Public IP Address
wget -qO - http://myip.dk/ | egrep -m1 -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'

$


====================
== grep recently posted

$ clgrep 
### Launch an Explorer window with a file selected
explorer /select,[file]

### Search specified $TEXT1 and Replace that by specified arg ($TEXT2)
find "$DIR" -regex "$FILENAME" -type f -print0 | xargs -0 sed -i _`date "+%y%m%d%H%M%S"` -E "s/$TEXT1/$TEXT2/g"

### count IPv4 connections per IP
netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | sed s/::ffff:// | cut -d: -f1 | sort | uniq -c | sort -n

$