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Display the list of all opened tabs from Firefox via a python one-liner and a shell hack to deal with python indentation.

You have to do that before : cd ~/.mozilla/firefox/<YOUR PROFILE> Require bash. If you use something else, you may use echo <CODE> | python Forked from ArkSeth python script.
This is sample output - yours may be different.
3

python2 <<< $'import json\nf = open("sessionstore.js", "r")\njdata = json.loads(f.read())\nf.close()\nfor win in jdata.get("windows"):\n\tfor tab in win.get("tabs"):\n\t\ti = tab.get("index") - 1\n\t\tprint tab.get("entries")[i].get("url")'

sputnick · 2009-12-28 21:56:05 7
command! -nargs=1 Vs vs <args>

Because entering ':' requires that you press shift, sometimes common command-line / mini-buffer commands will be capitalized by accident. Show Sample Output
This is sample output - yours may be different.
```
In .vimrc:

command! W w
command! -nargs=1 Vs vs <args>
command! -nargs=1 VS vs <args>
```
1

Create aliases for common vim minibuffer/cmd typos

tmsh · 2009-12-28 20:58:29 3
oneliner to open several times same application
This is sample output - yours may be different.
-3

for i in $(seq 5); do xpenguins & done

unixmonkey7635 · 2009-12-28 14:01:20 3
View entire process string

Depending on your installation, when you run ps you will only get the first 40 or so characters displayed. In order to view the entire string, use /usr/ucb/ps on Solaris.
This is sample output - yours may be different.
-2

/usr/ucb/ps -auxgww

sharfah · 2009-12-28 12:36:04 3
oneliner to open several times same application
This is sample output - yours may be different.
-3

for ((i=0;i<5;i++)) ; do xpenguins & done

gilran · 2009-12-28 12:10:33 3
find out how much space are occuipied by files smaller than 1024K

The command gives size of all files smaller than 1024k, this information, together with disk usage, can help determin file system parameter (e.g. block size) or storage device (e.g. SSD v.s. HDD). Note if you use awk instead of "cut| dc", you easily breach maximum allowed number of records in awk. Show Sample Output
This is sample output - yours may be different.
```
290545766
```
1

find dir -size -1024k -type f | xargs -d $'\n' -n1 ls -l | cut -d ' ' -f 5 | sed -e '2,$s/$/+/' -e '$ap' | dc

zhangweiwu · 2009-12-28 04:23:01 5
live ssh network throughput test

connects to host via ssh and displays the live transfer speed, directing all transferred data to /dev/null needs pv installed Debian: 'apt-get install pv' Fedora: 'yum install pv' (may need the 'extras' repository enabled) Show Sample Output
This is sample output - yours may be different.
```
88.2MB 0:00:15 [6.83MB/s] [    <=>            ]
```
28

yes | pv | ssh $host "cat > /dev/null"

opertinicy · 2009-12-27 21:34:23 30
oneliner to open several times same application

just replace the number 5 with the variable you want , and the xpenguins software with the one you want Show Sample Output
This is sample output - yours may be different.
```
gnu@robby:~$ i="0";  while [ $i  -lt  5 ]  ;  do xpenguins &  i=$[$i+1] ; done   
[10] 29014
[11] 29015
[12] 29016
[13] 29017
[14] 29018
gnu@robby:~$
```
-2

i="0"; while [ $i -lt 5 ] ; do xpenguins & i=$[$i+1] ; done

eastwind · 2009-12-27 21:05:33 3
Pause and Resume Processes

Add that and "cont () { ps -ec | grep $@ | kill -SIGCONT `awk '{print $1}'`; }" (without the quotes) to you bash profile and then use it to pause and resume processes safely
This is sample output - yours may be different.
1

stop () { ps -ec | grep $@ | kill -SIGSTOP `awk '{print $1}'`; }

iridium172 · 2009-12-27 19:40:09 76
Install MP4Box

# wget http://nchc.dl.sourceforge.net/project/gpac/GPAC/GPAC%200.4.5/gpac-0.4.5.tar.gz # wget http://nchc.dl.sourceforge.net/project/gpac/GPAC%20extra%20libs/GPAC%20extra%20libs%200.4.5/gpac_extra_libs-0.4.5.tar.gz # tar -zxf gpac-0.4.5.tar.gz # tar -zxf gpac_extra_libs-0.4.5.tar.gz # cd gpac_extra_libs # cp -r * ../gpac/extra_lib # cd ../gpac # chmod +x configure # yum install zlib* # ./configure # make lib # make apps # make install lib # make install # cp bin/gcc/libgpac.so /usr/lib Show Sample Output
This is sample output - yours may be different.
```
# wget http://nchc.dl.sourceforge.net/project/gpac/GPAC/GPAC%200.4.5/gpac-0.4.5.tar.gz
# wget http://nchc.dl.sourceforge.net/project/gpac/GPAC%20extra%20libs/GPAC%20extra%20libs%200.4.5/gpac_extra_libs-0.4.5.tar.gz

# tar -zxf gpac-0.4.5.tar.gz
# tar -zxf gpac_extra_libs-0.4.5.tar.gz
# cd gpac_extra_libs
# cp -r * ../gpac/extra_lib
# cd ../gpac
# chmod +x configure

# yum install zlib*

# ./configure
# make lib
# make apps
# make install lib
# make install
# cp bin/gcc/libgpac.so /usr/lib
```
-13

check output

svnlabs · 2009-12-27 05:28:01 3
Set Permission to user and group

Set Permission to user and group Show Sample Output
This is sample output - yours may be different.
```
Set Permission to user and group
```
-3

chown -R webuser:webgroup /var/www/vhosts/domain.com/httpdocs

svnlabs · 2009-12-27 05:25:53 3
wget ? server to server files transfer

wget ? server to server files transfer
This is sample output - yours may be different.
-2

wget -H -r ?level=1 -k -p http://www.domain.com/folder/

svnlabs · 2009-12-27 05:23:27 3
upload a file via ftp
This is sample output - yours may be different.
0

curl -u user:passwd -T /home/dir/local_file_to_upload ftp://your_host.com/subdir/

m33600 · 2009-12-26 02:48:05 3
floating point shell calculator
This is sample output - yours may be different.
0

calc() { awk 'BEGIN { OFMT="%f"; print '"$*"'; exit}'; }

cfajohnson · 2009-12-25 19:08:16 5
show how much diskspace all images in a given directory need
This is sample output - yours may be different.
0

find /home/bubo/ -type f $ -iname \*.jpg -print0 , -iname \*.png -print0 , -iname \*gif -print0 $ | du -cm --files0-from - | tail -1

bubo · 2009-12-25 16:21:46 3
Find all uses of PHP constants in a set of files
This is sample output - yours may be different.
-2

$class=ExampleClass; $path=src; for constant in `grep ' const ' $class.php | awk '{print $2;}'`; do grep -r "$class::$constant" $path; done

BluesDragon · 2009-12-24 11:32:24 4
floating point bash calculator w/o precision

terms inclosing '()' must be enclosed by "" (soft quotes) bash variables must be referenced: b $x/$y ugly bracket checking (balanced, fractions...) default precision 2 Show Sample Output
This is sample output - yours may be different.
```
b 6*7 -> 42
b "e(1)" 6 -> 2.718281
a=1; b=1/7; b $a/$b -> 0.14
```
0

b(){ echo "scale=${2:-2}; $1" | bc -l; }

dadi · 2009-12-23 23:44:31 9
List folders containing only PNGs
This is sample output - yours may be different.
2

find . -name '*png' -printf '%h\0' | xargs -0 ls -l --hide=*.png | grep -ZB1 ' 0$'

unixmonkey7586 · 2009-12-23 18:50:35 4
Recursive chmod all files and directories within the current directory
This is sample output - yours may be different.
5

chmod -R 774 .

cfajohnson · 2009-12-23 18:42:26 6
Find the location of the currently loaded php.ini file

Quick and easy way to find out which php.ini file is being used. Especially useful if you just need to find the location of the file for editing purposes. Show Sample Output
This is sample output - yours may be different.
```
[user@server ~]$ php -i |grep php.ini
Configuration File (php.ini) Path => /usr/local/lib
Loaded Configuration File => /usr/local/lib/php.ini
```
5

php -i | grep php.ini

jemmille · 2009-12-23 15:52:20 4
Recursive chmod all files and directories within the current directory

sometimes if directories are too deep, chmod -R fails... in those cases, a find comes in most handy :)
This is sample output - yours may be different.
-10

find . -print -exec chmod 777 {} \;

ringlerun · 2009-12-23 13:16:31 7
Typing the current date ( or any string ) via a shortcut as if the keys had been actually typed with the hardware keyboard in any application.

That works in all softs, CLI or GUI... I don't want to waste time to all the time typing the same stuff . So, I have that command in my window manager shortcuts ( meta+l ). All the window managers have editable shortcuts AFAIK. If not, or you don't want to use it that way, you can easily use the xbindkeys soft. I you're using kde4, you can run : systemsettings then open "inputs actions" and create a new shortcut. For Gnome take a look there : http://www.cyberciti.biz/faq/howto-create-keyboard-shortcuts-in-gnome/ A more advanced one, with strings and newlines : xvkbd -xsendevent -text "---8<-----\nToday date is: $(date +%Y%m%d)\n---8<-----" For complicated or long paste, you can feed xvkbd with a file : xvkbd -xsendevent -file <file> You can simulate ^C ( control+c ) too or others combinations of keys : xvkbd -text "\C\Ac" There's no man page nor help ( On my Archlinux distro ), but you can see online doc there : http://homepage3.nifty.com/tsato/xvkbd/ Show Sample Output
This is sample output - yours may be different.
```
20091225
```
14

xvkbd -xsendevent -text $(date +%Y%m%d)

sputnick · 2009-12-23 12:01:07 11
Recursive chmod all files and directories within the current directory
This is sample output - yours may be different.
-11

find | xargs chmod 777

tsiqueira · 2009-12-23 10:21:58 4
copy partition table from /dev/sda to /dev/sdb
This is sample output - yours may be different.
2

sfdisk -d /dev/sda | sed 's/sda/sdb/g' | sfdisk /dev/sdb

kobayashison · 2009-12-22 23:35:30 4
copy partition table from /dev/sda to /dev/sdb

*as long as the drives are exactly the same* then this command copies the partition table on /dev/sda to /dev/sdb
This is sample output - yours may be different.
-3

sfdisk /dev/sdb <(sfdisk -d /dev/sda| perl -pi -e 's/sda/sdb/g')

linuxrawkstar · 2009-12-22 22:45:41 3
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print all except first collumn

Hardlink all identical files in the current directory (regain some disk space)

Meaning of switches (see man page too): v verbose p ignore mode (permissions) o ignore owner, group t ignore time of modification Disadvantage: If you modify any linked file, this will propagate to all other files which occupy the same space.

faster version of ls *

I know its not much but is very useful in time consuming scripts (cron, rc.d, etc).

Don't save commands in bash history (only for current session)

Unsetting HISTFILE avoid getting current session history list saved.

Get the time since epoch

Get the time since epoch. Useful when working with commands and logs which use this format.

Efficient count files in directory (no recursion)

$ time perl -e 'if(opendir D,"."){@a=readdir D;print $#a - 1,"\n"}' 205413 real 0m0.497s user 0m0.220s sys 0m0.268s $ time { ls |wc -l; } 205413 real 0m3.776s user 0m3.340s sys 0m0.424s ********* ** EDIT: turns out this perl liner is mostly masturbation. this is slightly faster: $ find . -maxdepth 1 | wc -l sh-3.2$ time { find . -maxdepth 1|wc -l; } 205414 real 0m0.456s user 0m0.116s sys 0m0.328s ** EDIT: now a slightly faster perl version $ perl -e 'if(opendir D,"."){++$c foreach readdir D}print $c-1,"\n"' sh-3.2$ time perl -e 'if(opendir D,"."){++$c foreach readdir D}print $c-1,"\n"' 205414 real 0m0.415s user 0m0.176s sys 0m0.232s

Print average GPU core temperature

Open a manpage in the default (graphical) web browser

An easy alias for opening a manpage, nicely HTML formatted, in your set internet browser. If you get a "command exited with status 3" error you need to install groff.

Query Wikipedia via console over DNS

Renames all files in the current directory such that the new file contains no space characters.

This is a better version, as it does no command piping, uses for instead of while loops, which allows for a list of files in the current working directory to be natively processed. It also uses the -v/verbose option with mv to let you know what the command is doing. While the command does exactly the same in a better way, I would modify the sed option to replace spaces with underscores instead, or dashes. Please note that you'll receive errors with this command as it tries to rename files that don't even have spaces. This is an alternative to: http://www.commandlinefu.com/commands/view/8761/renames-all-files-in-the-current-directory-such-that-the-new-file-contains-no-space-characters.

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