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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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Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

list all file extensions in a directory

A shorter version

Target a specific column for pattern substitution

Awk replaces every instance of foo with bar in the 5th column only.

Bash Dialog

The dialog utility is used to create a basic level graphical user interface. We can use this in Shell script to create very useful programs.

Print macOS current power delivery max wattage

Print the max wattage of the current power draw source for a Mac. Note that the current amount of watts drawn may be lower, particularly if a high-wattage adapter is plugged into a Mac that has a full battery.

Paged, colored svn diff

I put this in a shell script called "svndiff", as it provides a handy decorated "svn diff" output that is colored (which you can't see here) and paged. The -r is required so less doesn't mangle the color codes.

Script Terminal Session

script -f /tmp/foo will place all output of the terminal, including carriage returns, to a file. This file can be tail dash-eff'ed by one or more other terminals to display the information of the main terminal. Good way to share one's screen on short notice. Note: This produces a very accurate output, but that includes depending on the size of your terminal to be the same. You can clear screens or even resize the terminal for others using this function; I use it in conjunction with the "mid" command in my list.

Encrypt and password-protect execution of any bash script, Version 2

(Please see sample output for usage) Use any script name (the read command gets it) and it will be encrypted with the extension .crypt, i.e.: myscript --> myscript.crypt You can execute myscript.crypt only if you know the password. If you die, your script dies with you. If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string). Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner. Sorry for the chmod on parentheses, I dont like "-" at the end. Thanks flatcap for the subshell abbreviation to /dev/null

Say something out loud

Whatever arguments you pass will be spoken out loud. (Put it in a script or shell function.)

List bash functions defined in .bash_profile or .bashrc

typeset command gives to stdout all the functions defined in a bash session, -f and -F switches are for: all functions names with body (-f) and all functions names only (-F).

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