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Open a file using vim in read only (like less)
This is sample output - yours may be different.
-9

vim -R /etc/passwd

techie · 2013-05-09 08:28:32 6
apache , how to avoid bugs and start directly the server

This command is designed in order to avoid this error : /etc/init.d/apache2 force-reload * Reloading web server config apache2 httpd not running, trying to start (13)Permission denied: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs [fail] Show Sample Output
This is sample output - yours may be different.
```
* Starting web server apache2                                           [ OK ] 
```
-9

cd /etc/init.d && sudo ./apache2 start

nco · 2010-04-17 16:01:18 3
Upload file to remote server using SCP

Upload file to remote server using SCP
This is sample output - yours may be different.
-9

scp -P 22 /home/svnlabs.txt root@92.178.0.56:/home/svnlabs.txt

lalit241 · 2010-01-22 17:21:07 3
cd
This is sample output - yours may be different.
-9

cd -

another · 2010-11-03 12:17:57 4
Install php-tidy Module / Extension

Install php-tidy Module / Extension
This is sample output - yours may be different.
-9

yum install php-tidy

Jonas_E · 2014-01-28 10:31:29 10
Brings you back to previous directory
This is sample output - yours may be different.
-9

alias b='cd -'

P17 · 2009-05-05 16:21:22 6
Visit another command line gōngfu site

Today I learned that commandlinefu.com is not a alone in its conquest for further the knowledge about the command line. Allow me to introduce you to http://shell-fu.org/
This is sample output - yours may be different.
-9

lynx http://shell-fu.org/

penpen · 2009-08-20 11:47:35 5
mkdir some file and mv some file

mkdir some file and mv some file Show Sample Output
This is sample output - yours may be different.
```
mkdir some file and mv some file
```
-9

for i in `seq 100`;do mkdir f{1..100} touch myfile$i mv myfile$i f$i;done

gaowei · 2009-11-24 13:54:41 6
Search The History for a Particular Command (ssh in this case)

After seeing the command you wish to repeat, just invoke it using the ! syntax.
This is sample output - yours may be different.
-9

history | grep ssh

haivu · 2009-04-03 01:35:52 11

find all active ip?s in a subnet

documents all active ips on a subnet and saves to txt file. Show Sample Output

-9

FOR /L %i IN (1,1,254) DO ping -n 1 10.254.254.%i | FIND /i "Reply">> c:\ipaddresses.txt

barrytrujillo · 2010-06-29 21:02:21 3

show current directory
This is sample output - yours may be different.
-9

nautilus `pwd`

taisu · 2009-09-09 00:23:33 5
Find broken symlinks
This is sample output - yours may be different.
-9

find . -type l | xargs file | grep broken

kineticrick · 2011-04-07 22:58:02 4
将一个文件拷贝到另一个文件的末尾
This is sample output - yours may be different.
-9

dd if=file1 of=file2 seek=1 bs=$(stat -c%s file2)

overawe · 2010-03-31 08:18:22 5
List all system users
This is sample output - yours may be different.
-9

~<press tab twice>

lv4tech · 2009-05-12 17:33:33 12
Replace spaces with '_' in filenames

Takes filenames and directory names and replace space to '_'.
This is sample output - yours may be different.
-9

find -depth . | (while read FULLPATH; do BASENAME=`basename "${FULLPATH}"`; DIRNAME=`dirname "${FULLPATH}"`; mv "${DIRNAME}/${BASENAME}" "${DIRNAME}/${BASENAME// /_}"; done)

mohan43u · 2009-03-24 21:04:32 11
Easily find an old command you run

I know how hard it is to find an old command running through all the files because you couldn't remember for your life what it was. Heres the solution!! Grep the history for it. depending on how old the command you can head or tail or if you wanted to search all because you cannot think how long ago it was then miss out the middle part of the command. This is a very easy and effective way to find that command you are looking for.
This is sample output - yours may be different.
-9

cat .bash_history | tail -100 | grep {command}

techie · 2013-04-10 10:40:52 8
kill process by name

It's easy to understand and remember. Need ruby and rush to do this.
This is sample output - yours may be different.
-9

rush> processes.filter(:cmdline => /mc/).kill

chenge · 2010-05-01 20:51:18 4
Have you mooed today?
This is sample output - yours may be different.
-9

apt-get moo

unixmonkey1055 · 2009-04-20 17:09:37 9
create or empty a file
This is sample output - yours may be different.
-9

> filename

vbs100 · 2009-02-14 12:58:52 10
Best command EVER!!

rsync is the best command ever and I am interested what the rest of you think is the best command
This is sample output - yours may be different.
-9

rsync

techie · 2013-03-01 14:47:19 5
Run a cron job every 15 mins past the hour

Instead of using: 0,15,30,45 * * * * /path/to/command
This is sample output - yours may be different.
-9

*/15 * * * * /path/to/command

sharfah · 2009-08-30 14:53:08 3
list with full path

Use the -a flag to display all files, including hidden files. If you just want to display regular files, use a -1 (yes, that is the number one). Got this by RTFM and adding some sed magic. [bbbco@bbbco-dt ~]$ ls -a | sed "s#^#${PWD}/#" /home/bbbco/. /home/bbbco/.. /home/bbbco/2011-09-01-00-33-02.073-VirtualBox-2934.log /home/bbbco/2011-09-10-09-49-57.004-VirtualBox-2716.log /home/bbbco/.adobe /home/bbbco/.bash_history /home/bbbco/.bash_logout /home/bbbco/.bash_profile /home/bbbco/.bashrc ... [bbbco@bbbco-dt ~]$ ls -1 | sed "s#^#${PWD}/#" /home/bbbco/2011-09-01-00-33-02.073-VirtualBox-2934.log /home/bbbco/2011-09-10-09-49-57.004-VirtualBox-2716.log /home/bbbco/cookies.txt /home/bbbco/Desktop /home/bbbco/Documents /home/bbbco/Downloads ... Show Sample Output
This is sample output - yours may be different.
```
[bbbco@bbbco-dt ~]$ ls -a | sed "s#^#${PWD}/#"
/home/bbbco/.
/home/bbbco/..
/home/bbbco/2011-09-01-00-33-02.073-VirtualBox-2934.log
/home/bbbco/2011-09-10-09-49-57.004-VirtualBox-2716.log
/home/bbbco/.adobe
/home/bbbco/.bash_history
/home/bbbco/.bash_logout
/home/bbbco/.bash_profile
/home/bbbco/.bashrc
...
```
-9

ls -a | sed "s#^#${PWD}/#"

bbbco · 2011-12-16 22:19:06 6
Adobe Updater Crashes on Mac OS X Fix

adobe updater keeps popping up. (normal update fails, probably due to insufficient rights) (src: http://aricsblog.blogspot.com/2007/12/adobe-updater-crashes-on-mac-os-x-and.html)
This is sample output - yours may be different.
-9

sudo /Applications/Utilities/Adobe\ Utilities.localized/Adobe\ Updater5/Adobe\ Updater.app/Contents/MacOS/Adobe\ Updater

miccaman · 2009-06-25 08:07:47 18
Which Version Is My Bash Shell?

This is one way to find out. Show Sample Output
This is sample output - yours may be different.
```
$ echo $BASH_VERSION
3.2.17(1)-release
```
-9

echo $BASH_VERSION

haivu · 2009-05-21 15:10:27 7

Tell us quantities of disk usage memory and swap used in a moment done

A short way to give us relevant report in a moment done about quantities on disk usage, memory and swap in our Linux Systems. Show Sample Output

-9

alias dfr='df;free'

ximo88 · 2009-04-28 11:30:31 17

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Combine all .mpeg files in current directory into one big one.

Good old cat & output redirection. Using this method you can combine all kinds of things - even mpeg files. My video camera makes a series of .mpeg files that are broken into 4gb chunks. Using this command I can easily join them together. Even better, combined with the cp command the files can be copied and joined in one step.

list files recursively by size

Print text string vertically, one character per line.

Remove audio stream from a media file

This syntax also works for ffmpeg as avconv is a fork of ffmpeg.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

List only executables installed by a debian package

Safe for whitespaces in names.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

Add all unversioned files to svn

No need for grep, let awk do the match. This will not behave properly if the filenames contains whitespace, which is awk's default field separator.

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