colors in bash -- script to display all the possible colors.

2010-06-06 3 min read Bash Fedora Linux

If you wanted to have colors in the bash output (including the colors in PS1-4), don’t you keep wondering how the color code would look on the terminal. So, I wrote this small script to show the complete color codes. This is how the output would look:

$\"Bash$

And here is the script:

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      #!/bin/bash -<br /> #===============================================================================<br /> #<br /> # &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;FILE: &nbsp;colors.sh<br /> #<br /> # &nbsp; &nbsp; &nbsp; &nbsp; USAGE: &nbsp;./colors.sh<br /> #<br /> # &nbsp; DESCRIPTION: &nbsp;Bash colors<br /> #<br /> # &nbsp; &nbsp; &nbsp; OPTIONS: &nbsp;---<br /> # &nbsp;REQUIREMENTS: &nbsp;---<br /> # &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;BUGS: &nbsp;---<br /> # &nbsp; &nbsp; &nbsp; &nbsp; NOTES: &nbsp;---<br /> # &nbsp; &nbsp; &nbsp; &nbsp;AUTHOR: &nbsp;Amit Agarwal (AKA), amit.agarwal@amit-agarwal.co.in<br /> # &nbsp; &nbsp; &nbsp; COMPANY: &nbsp;Individual<br /> # &nbsp; &nbsp; &nbsp; VERSION: &nbsp;1.0<br /> # &nbsp; &nbsp; &nbsp; CREATED: &nbsp;09/21/2009 06:12:07 PM IST<br /> # &nbsp; &nbsp; &nbsp;REVISION: &nbsp;---<br /> #===============================================================================<br /> <br /> for c in `seq 0 255`;<br /> do<br /> t=5;<br /> [[ $c -lt 108 ]]&&t=0;<br /> for i in `seq $t 5`;<br /> do<br /> #Display the codes also for easier lookup in terminal<br /> <!--loginview start-->echo $i;${c}<!--loginview end--><br /> echo -e "<a class="zem_slink" title="Path (computing)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Path_%28computing%29">\\</a>\e[0;48;$i;${c}m|| $i:$c `seq -s+0 $(($COLUMNS/2))|tr -d \'[0-9]\'`\\e[0m";<br /> done;<br /> done<br /> <br /> # setup_colors - Adds colors to array CC for global use<br /> # 30 - Black, 31 - Red, 32 - Green, 33 - Yellow, 34 - Blue,<br /> # 35 - Magenta, 36 - Blue/Green, 37 - White,<br /> # 30/42 - Black on Green \'30\\;42\'<br /> <!--loginview start-->function setup_colors(){<br /> declare -a CC;<br /> for i in `seq 0 7`;<br /> do<br /> ii=$(($i+7));<br /> CC[$i]="\\033[1;3${i}m";<br /> CC[$ii]="\\033[0;3${i}m";<br /> done;<br /> CC[15]="\\033[30;42m";<br /> R=$\'\\033[0;00m\';<br /> X=$\'\\033[1;37m\';<br /> export R X;<br /> }<br /> function display_colors(){<br /> for i in $(seq 0 $((${#CC[@]} - 1))); do echo -e "${CC[$i]}[$i]\\n$R"; done<br /> }
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unbound variable – bash completion not working and having issues with other stuff like command not found. (amit-agarwal.co.in)
Modifying the bashrc or bash startup files. (amit-agarwal.co.in)
Nature-Inspired Colors for Home Interiors (interiordecorating.suite101.com)
Dark and Light Blue Colors in Feng Shui (feng-shui-concepts.suite101.com)
Delete all files in a folder that don\’t match a certain file extension (amit-agarwal.co.in)

$\"Reblog$

vi tips with examples for programmers — very useful

2010-06-05 1 min read Vim Tips

First off, sorry for not posting regularly. Will be so for probably another couple of days.

In the meantime found a very nice artcle on vim:

<a href="http://en.wikibooks.org/wiki/Learning_the_vi_editor/Vim/Useful_things_for_programmers_to_know" target="_blank">http://en.wikibooks.org/wiki/Learning_the_vi_editor/Vim/Useful_things_for_programmers_to_know

PuTTY ssh without password

2010-06-05 1 min read Linux

you can do a ssh without password.. Today we will see how to do this with putty.

Generate public/private (DSA)key pair using puttygen.
copy the public key to ~/.ssh/authourized_keys on your server (moonware/sunware/skyware). Same key can be used on all the servers.
make sure that your home directory permissions are 755
directory permission for .ssh is 700
file permission for authourized_keys is 600
now login using putty and specify your private key in the configuration of putty and also specify your username.

save date and time for each command in history

2010-06-05 1 min read Linux

<a href="http://blog.amit-agarwal.co.in/category/linux/">Bookmark this category

How To Install Ailurus On Fedora

2010-06-05 2 min read Fedora

For those who have not yet heard about ailurus:

<img src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/ailuruslogo.png" alt="" width="24" height="24" />What is Ailurus?

Ailurus is cross-Linux-<a class="zem_slink freebase/en/linux_distribution" title="Linux distribution" rel="wikipedia" href="http://en.wikipedia.org/wiki/Linux_distribution">distribution <a class="zem_slink freebase/en/gnu_general_public_license" title="GNU General Public License" rel="wikipedia" href="http://en.wikipedia.org/wiki/GNU_General_Public_License">GPL <a class="zem_slink freebase/en/computer_software" title="Computer software" rel="wikipedia" href="http://en.wikipedia.org/wiki/Computer_software">software, which aims at making Linux easier to use, for newcomers.

<img src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/ailuruslogo.png" alt="" width="24" height="24" />What does Ailurus hope to do?

Ailurus hopes to reduce the difficulty which newcomers encounter when they are using Linux.
Continue reading

Security — Installing and monitoring snort logs.

2010-06-04 2 min read Fedora Linux

Snort is a very good security tool to install if you are concerned about the security of your system. I find it really useful but the problem is I keep forgetting to monitor the logs so what did I do, I installed snort and configured cron to send to logs everyday, here’s how.

On fedora, snort is available in the repository but the rules are not. So to install snort just type in the following in a terminal:

SQuirrel SQL for Graphical interface to Oracle/MySQL and loads of other database -- OSS and free.

2010-06-04 1 min read Linux

<a href="http://blog.amit-agarwal.co.in/category/linux/">Bookmark this category

SQuirrel <a class="zem_slink freebase/en/sql" title="SQL" rel="wikipedia" href="http://en.wikipedia.org/wiki/SQL">SQL for <a class="zem_slink freebase/en/graphical_user_interface" title="Graphical user interface" rel="wikipedia" href="http://en.wikipedia.org/wiki/Graphical_user_interface">Graphical interface to Oracle/MySQL and loads of other <a class="zem_slink freebase/en/database" title="Database" rel="wikipedia" href="http://en.wikipedia.org/wiki/Database">database — <a class="zem_slink freebase/en/open_sound_system" title="Open Sound System" rel="homepage" href="http://www.opensound.com/">OSS and free.

<a class="zem_slink freebase/en/squirrel_sql_client" title="SQuirreL SQL Client" rel="homepage" href="http://www.squirrelsql.org/">SQuirreL SQL Client is a graphical SQL client written in <a class="zem_slink freebase/guid/9202a8c04000641f800000000f8545aa" title="Java (programming language)" rel="homepage" href="http://java.sun.com">Java that will allow you to view the structure of a <a class="zem_slink freebase/en/java_database_connectivity" title="Java Database Connectivity" rel="wikipedia" href="http://en.wikipedia.org/wiki/Java_Database_Connectivity">JDBC compliant database, browse the <a class="zem_slink freebase/en/data" title="Data" rel="wikipedia" href="http://en.wikipedia.org/wiki/Data">data in tables, issue SQL commands etc. The pre-requisites are java 1.5 and 1.6 in the sequence of the <a class="zem_slink freebase/en/installation" title="Installation (computer programs)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Installation_%28computer_programs%29">installer versions! Installers available at: <a href="http://sourceforge.net/projects/squirrel-sql/files/">http://sourceforge.net/projects/squirrel-sql/files/ Home page and installation instructions at: <a href="http://www.squirrelsql.org/#installation">http://www.squirrelsql.org/#installation Have a nice time with the SQuirreL!!<h6 class="zemanta-related-title">Related articles by Zemanta <ul class="zemanta-article-ul"> <li class="zemanta-article-ul-li"><a href="http://blog.amit-agarwal.co.in/2010/04/27/fvwm-look-and-feel-icons-and-themes/">fvwm Look and Feel, icons and themes (amit-agarwal.co.in) <li class="zemanta-article-ul-li"><a href="http://checkedexception.blogspot.com/2010/03/using-ms-sql-from-linux.html">Using MS SQL from Linux (checkedexception.blogspot.com) <li class="zemanta-article-ul-li"><a href="http://briancarper.net/blog/adminer-where-have-you-been-all-my-life">Adminer, where have you been all my life? (briancarper.net) <li class="zemanta-article-ul-li"><a href="http://helpdeskgeek.com/databases/an-introduction-to-oracle-sql-developer-part-v/">An Introduction to Oracle SQL Developer – Part V (helpdeskgeek.com) <div class="zemanta-pixie"><a class="zemanta-pixie-a" title="Reblog this post [with Zemanta]" href="http://reblog.zemanta.com/zemified/6c1be63c-1479-4ac2-9707-3e8c8b750585/"><img class="zemanta-pixie-img" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/reblog_b12.png" alt="Reblog this post [with Zemanta]" /><span class="zem-script more-related more-info pretty-attribution paragraph-reblog">

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