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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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Bash logger

GRUB2: set Super Mario as startup tune

I'll let Slayer handle that. Raining Blood for your pleasure.

display a smiling smiley if the command succeeded and a sad smiley if the command failed

you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Convert camelCase to underscores (camel_case)

Useful for switching over someone else's coding style who uses camelCase notation to your style using all lowercase with underscores.

Download all Red Hat Manuals - A better way by user Flatcap

Let's give Flatcap credit for this elegant solution, instead of leaving it hidden as a comment. Tested on RHEL6 and it works. Nice and clean.

Start dd and show progress every X seconds

Adjust "sleep X" to your needs. *NOTE: First sleep is required because bash doesn't have a "post-test" syntax (do XXX while).

Simplest way to get size (in bytes) of a file

$ cat mod_log_config.c | shmore or $ shmore < mod_log_config.c Most pagers like less, more, most, and others require additional processes to be loaded, additional cpu time used, and if that wasn't bad enough, most of them modify the output in ways that can be undesirable. What I wanted was a "more" pager that was basically the same as running: $ cat file Without modifying the output and without additional processes being created, cpu used, etc. Normally if you want to scroll the output of cat file without modifying the output I would have to scroll back my terminal or screen buffer because less modifies the output. After looking over many examples ranging from builtin cat functions created for csh, zsh, ksh, sh, and bash from the 80's, 90s, and more recent examples shipped with bash 4, and after much trial and error, I finally came up with something that satisifed my objective. It automatically adjusts to the size of your terminal window by using the LINES variable (or 80 lines if that is empty) so This is a great function that will work as long as your shell works, so it will work just find if you are booted in single user mode and your /usr/bin directory is missing (where less and other pagers can be). Using builtins like this is fantastic and is comparable to how busybox works, as long as your shell works this will work. One caveat/note: I always have access to a color terminal, and I always setup both the termcap and the terminfo packages for color terminals (and/or ncurses and slang), so for that reason I stuck the $ tput setab 4; tput setaf 7 command at the beginning of the function, so it only runs 1 time, and that causes the -- SHMore -- prompt to have a blue background and bright white text. This is one of hundreds of functions I have in my .bash_profile at AskApache.com, but actually won't be included till the next update. If you can improve this in any way at all please let me know, I would be very grateful! ( Like one thing I want is to be able to continue to the next screen by pressing any key instead of now having to press enter to continue)

Launch firefox on a remote linux server

Actually 'firefox' is a script that then launches the 'firefox-bin' executable. You need to specify the 'no-remote' option in order to launch remote firefox instead of your local one (this drove me crazy time ago)

Top ten memory hogs

Inspired by #7065

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