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Create new repo in Cobbler for CentOS 5.3 updates

Add a repo to cobbler. To download all the repository contents the command is: cobbler reposync
This is sample output - yours may be different.
-1

cobbler repo add --name=CentOS-5.3-i386-updates --mirror=http://mirror3.mirror.garr.it/mirrors/CentOS/5.3/updates/i386/

w00binda · 2009-04-27 10:18:45 5
Today's date on a yearly calendar...

Show today date on a yearly calendar.
This is sample output - yours may be different.
-1

cal -y

andrepuel · 2009-09-02 12:57:23 50
Show apps that use internet connection at the moment.

Can be used to discover what programms create internet traffic. Skip the part after awk to get more details. Has anyone an idea why the uniq doesn't work propperly here (see sample output)? Show Sample Output
This is sample output - yours may be different.
```
java          
pidgin         
pidgin         
pidgin         
pidgin         
pidgin         
thunderbird-b 
thunderbird-b 
thunderbird-b 
thunderbird-b 
```
-1

netstat -lantp | grep -i establ | awk -F/ '{print $2}' | uniq | sort

ktoso · 2009-09-19 13:54:36 7
Weather on the Command line

Will return temperature in Fahrenheit of a location (New York City in example). Uses a Google API. Show Sample Output
This is sample output - yours may be different.
```
35
```
-1

curl -s "http://www.google.com/ig/api?weather=New%20York" | sed 's|.*<temp_f data="$[^"]*$"/>.*|\1|'

matthewbauer · 2010-02-08 23:06:48 5
Merge tarballs

You don't need to create an intermediate file, just pipe the output directly to tar command and use stin as file (put a dash after the f flag).
This is sample output - yours may be different.
-1

cat 1.tar.gz 2.tar.gz | tar zxvif -

psychopenguin · 2010-05-09 03:50:00 5
Scroll a message in a terminal titlebar

Usage: titlescroll "message" <width> Requires command "xtitle" or replace with: echo -ne "\e]0;TEXT_HERE\007"
This is sample output - yours may be different.
-1

function titlescroll { _X=0 _TITLEMSG=$1 _WIDTH=${2:-16} _TITLEMSG=`printf "%$((${#_TITLEMSG}+$_WIDTH))s" "$_TITLEMSG"` while `true` do _X=$(((_X+1)%${#_TITLEMSG})) xtitle "${_TITLEMSG:_X:_WIDTH}" done }

romulusnr · 2010-01-12 20:48:46 3
Remove Thumbs.db files from folders
This is sample output - yours may be different.
-1

find ./ -name Thumbs.db -exec rm -rf '{}' +

thameera · 2010-08-18 02:55:38 6
Remove duplicate lines using awk
This is sample output - yours may be different.
-1

!a[$0]++

Dawn_of_the_Dead · 2014-03-16 01:50:30 6
Alternative way to get the root directory size in megabytes
This is sample output - yours may be different.
-1

expr $(fdisk -s ` grep ' / ' /etc/mtab |cut -d " " -f1`) / 1024

ncaio · 2009-05-21 17:25:38 6
do a full file listing of every file found with locate

Escapes spaces in paths.
This is sample output - yours may be different.
-1

locate -i yourfilename | sed 's/ /\\ /g' | xargs ls -lah | less

unixmonkey23919 · 2011-07-26 13:00:39 4
Get current stable kernel version string from kernel.org

Fetches latest stable release version from first entry between tags Show Sample Output
This is sample output - yours may be different.
```
3.12.5
```
-1

curl -s -k https://www.kernel.org/feeds/kdist.xml | sed -n -e 's@.*<guid>$.*$</guid>.*@\1@p' | grep 'stable' | head -1 | awk -F , '{print $3}'

Wafelijzer · 2013-12-17 23:59:27 7
Format a flooppy with windows compatible disk

The 1440 is the number of bytes, and the A: specifies the floppy drive.
This is sample output - yours may be different.
-1

mformat -f 1440 A:

eastwind · 2009-12-10 06:51:20 3
[Gentoo] Input modules, commented, in your module.autoload file

Whenever you compile a new kernel, there are always new modules. The best way to make sure you have the correct modules loaded when you boot is to add all your modules in the modules.autoload file (they will be commented) and uncomment all those modules you need. Also a good way to keep track of the available modules in your system. For other distros you may have to change the name of the file to /etc/modprobe.conf Show Sample Output
This is sample output - yours may be different.
```
# /etc/modules.autoload.d/kernel-2.6:  kernel modules to load when system boots.
#
# Note that this file is for 2.6 kernels.
#
# Add the names of modules that you'd like to load when the system
# starts into this file, one per line.  Comments begin with # and
# are ignored.  Read man modules.autoload for additional details.

# For example:
# aic7xxx
# mixer-oss.ko
# pcm-oss.ko
# seq-device.ko
# seq-oss.ko
# snd-seq.ko
```
-1

find /lib/modules/`uname -r`/ -type f -iname '*.o' -or -iname '*.ko' |grep -i -o '[a-z0-9]*[-|_]*[0-9a-z]*\.ko$' |xargs -I {} echo '# {}' >>/etc/modules.autoload.d/kernel-2.6

paragao · 2010-01-13 02:12:08 4
Function to bind MySQL hostport to forward remote MySQL connection to localhost.

Create a secure tunnelled connection for access to a remote MySQL database. For example, connect with MySQL Workbench to root@127.0.0.1:13306. Show Sample Output
This is sample output - yours may be different.
```
$ sshmysql [user@]remote-server
[1] 10653
```
-1

sshmysql() { ssh -L 13306:127.0.0.1:3306 -N $* & }

peterRepeater · 2011-09-01 10:21:55 8
show your locale language keyboard setting

Show Sample Output
This is sample output - yours may be different.
```
gnu@robby:~$ locale | grep LANG=
LANG=fr_BE.UTF-8
```
-1

locale | grep LANG=

eastwind · 2009-12-10 07:24:01 5
Play newest or random YouTube video

newly downloaded videos goyoutube random goyoutube rand This command assumes you've already downloaded some YouTube .mp4 or .flv video files via other means. Requires 'shuf', or your own stdin shuffler.
This is sample output - yours may be different.
-1

goyoutube() { d=/path/to/videos p=$d/playlist m=$d/*.mp4 f=$d/*.flv if [ "$1" == 'rand' ]; then ls -1 $m $f | shuf >$p else ls -1t $m $f >$p fi mplayer -geometry 500x400 -playlist $p }

meathive · 2010-04-11 18:53:49 4
Testing
This is sample output - yours may be different.
-1

who am i | wc -l

himanshu · 2012-03-20 10:32:17 5
View the list of files and directories in an archive with less.

This will print out the files and directories in a gzipped tarball.
This is sample output - yours may be different.
-1

less file.tar.gz

allbad · 2009-03-15 23:00:05 17
All IP connected to my host

find all computer connected to my host through TCP connection Show Sample Output
This is sample output - yours may be different.
```
81.91.145.204
85.133.199.175
85.185.21.146
91.186.200.13
91.189.90.40
91.98.155.188
91.99.41.81
92.50.59.10
94.182.63.188
```
-1

netstat -nut | awk '$NF=="ESTABLISHED" {print $5}' | cut -d: -f1 | sort -u

bitbasher · 2011-07-27 07:24:10 3
Sum up total size and count of all certain filename pattern/regex
This is sample output - yours may be different.
-1

find -regextype posix-egrep -regex ".*/[A-Z]{3}_201009[0-9]{2}.*" -printf "%f %s\n" | awk '{ SUM += $2;COUNT++ } END { print SUM/1024 " kb in " COUNT " files" }'

taintedkernel · 2010-09-21 15:41:45 3
Run a second copy of Firefox using the same profile on Mac OS X
This is sample output - yours may be different.
-1

(cd /Applications/Firefox.app/Contents/MacOS; ./firefox-bin -p default --no-remote)

DEinspanjer · 2009-02-18 21:35:02 5
Unlock your KDE4 session remotely (for boxes locked by KDE lock utility)

With this you can unlock your KDE4 session via SSH, via mobile phone SSH or e. g. scheduled task in crontab (without asking password). Useful when you need to grant somebody access to your locked profile remotely. Create an alias (e. g. as "unlock") and use with remote KDE4 lock. This works only on KDE4 boxes because KDE 3 is using utility with another name. Tested on Kubuntu 8.10.
This is sample output - yours may be different.
-1

killall -s 9 krunner_lock

b2e · 2009-05-21 22:29:06 7
List all available commands
This is sample output - yours may be different.
-1

in bash hit "tab" twice and answer y

sdadh01 · 2009-11-12 17:55:37 4
x bottles of beer on the wall graph

Will create a graph of the results for "x bottles of beer on the wall". Requires Gnuplot. Inspired by an xkcd comic: http://xkcd.com/715/ For sample output see: http://tr.im/xbottlesofbeer Show Sample Output
This is sample output - yours may be different.
```
See http://tr.im/xbottlesofbeer
```
-1

(echo "plot '-' with lines"; for x in $(seq 1 100); do curl -s "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=$(echo $x bottles of beer on the wall|sed 's/ /%20/g')"|sed 's/.*"estimatedResultCount":"$[^"]*$".*/\1\n/';done)|gnuplot -persist

matthewbauer · 2010-03-17 21:04:36 4
Remove executable bit from all files in the current directory recursively, excluding other directories, firm permissions

forces user to rw, group to r, and other to no access. files will not be marked executable. directories will be executable for users and groups only. Show Sample Output
This is sample output - yours may be different.
```
-rw-r-----   1 www-data www-data 3353273 Jun 21 17:58 XP_Help_20100621.zip
drwxr-x---   8 www-data www-data    4096 Jun  3  2009 Widgetized_HomePage
drwxr-x---  12 www-data www-data    4096 Jan 12  2010 Wizard_Old_Concept
drwxr-x---   5 www-data www-data    4096 Oct 21  2009 Wizard_New_Concept
```
-1

chmod -R u=rw-x+X,g=r-x+X,o= .

donnoman · 2010-07-16 18:42:00 5
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Output as many input

Output of a command as input to many

Copy sparse files

This causes cp to detect and omit large blocks of nulls. Sparse files are useful for implying a lot of disk space without actually having to write it all out. http://en.wikipedia.org/wiki/Sparse_file You can use it in a pipe too: $ dd if=/dev/zero bs=1M count=5 |cp --sparse=always /dev/stdin SPARSE_FILE

Labyrinth pattern

Generates labyrinth-like pattern on UTF-8 terminal in bash. For fun ;)

underscore to camelcase

diff files while disregarding indentation and trailing white space

**NOTE** Tekhne's alternative is much more succinct and its output conforms to the files actual contents rather than with white space removed My command on the other hand uses bash process substitution (and "Minimal" Perl), instead of files, to first remove leading and trailing white space from lines, before diff'ing the streams. Very useful when differences in indentation, such as in programming source code files, may be irrelevant

network interface and routing summary

Ultimate current directory usage command

Based on the MrMerry one, just add some visuals and sort directory and files

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

See n most used commands in your bash history

Know which modules are loaded on an Apache server

This let you know which modules has loaded the Apache server, very useful to know if the mod_rewrite is ready to use.

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