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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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Display unique values of a column

Find the unique values of a column utilizing awk. Credits goes to here (posted by "era"): http://www.unix.com/shell-programming-scripting/77138-awk-print-distinct-col-values.html

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Get absolut path to your bash-script

Another way of doing it that's a bit clearer. I'm a fan of readable code.

add the result of a command into vi

in command mode, navigate your cursor to the line where you want the command output to appear, and hit "!!". No need to enter edit mode or even type a ":" (colon).

Create subversion undo point

Allows you to save progress without committing. To revert to an undo point, svn revert then apply the undo point with patch. $ svn revert -R . && patch -p0 < .undo/2009-03-27_08:08:11rev57 Similar: http://www.commandlinefu.com/commands/view/373/archive-all-files-containing-local-changes-svn

sort monthwise

sort command can sort month-wise (first three letters of each month). See the sample output for clarification. Sorting Stable ? NO. Take note if that matters to you. Sample output suggests that sort performs unstable sorting (see the relative order of two 'feb' entries).

Follow tail by name (fix for rolling logs with tail -f)

If you use 'tail -f foo.txt' and it becomes temporarily moved/deleted (ie: log rolls over) then tail will not pick up on the new foo.txt and simply waits with no output. 'tail -F' allows you to follow the file by it's name, rather than a descriptor. If foo.txt disappears, tail will wait until the filename appears again and then continues tailing.

Convert a date to timestamp

Simple way to get a timestamp from a date

Compare two files side-by-side

I found out about this from Unix Power Tools, and thought it was pretty useful. Use the -w option to change the width of the output, and the -s option to suppress lines that are the same in both files.

Using commandoutput as a file descriptor

Description is moved to "Sample output" because the html sanitizer for commandlinefu breaks the examples..

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