bash 4.0 – new feature mapfile

2011-01-14 1 min read Bash Fedora

Recently I encountered a problem where I had to create couple of arrays in bash and these were quite dynamic in nature. This script was supposed to be used by couple of guys whom I did not trust too much in opening the script and modifyikng the array. So, the solution was to put these in different files and then put them in array using bash script itself. This is when I went through the bash man page again and found an interesting new inbuilt mapfile

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Adding a sub-menu in the wordpress admin menu :)

2010-07-29 2 min read Wordpress

For the impatient ones, first the code:
(in wp-admin folder, open the file menu.php) and locate the code:

$submenu[’edit.php’][10]  = array( _x(’Add New’, ’post’), ’edit_posts’, ’post-new.php’ );

and add the below:

$submenu[’edit.php’][7]  = array( _x(’Pending’, ’post’), ’edit_posts’, ’edit.php?post_status=pending&post_type=post’ );

And now the explanation and why do you need this 🙂

Problem:

There is no direct mechanism to access the pending posts in WP admin. I generally post through email and mark them as pending. So, whenever I go to my admin POSTs page, I will look through the list of pending items and post them as and when required. For this, when I am done with changes in one item, I need to either modify the address bar or need to go to posts link and then click the Pending items.

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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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let a cow tell you your fortune

2010-06-03 1 min read Bash Linux
Here\’s something that I saw on commandlinefu yesterday. That sent me thinking about some command to have the cow file picked randomly 🙂 So, here\’s the original command from the commandlinefu:

let a cow tell you your fortune

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        $ fortune | <a class="zem_slink freebase/en/cowsay" title="Cowsay" rel="homepage" href="http://www.nog.net/%7Etony/warez/cowsay.shtml">cowsay</a> -f tux
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coproc help - a new feature in bash

2010-05-10 0 min read Bash Fedora Linux
\"Screenshot
Image via Wikipedia

In the <a class="zem_slink freebase/en/bash" title="Bash" rel="homepage" href="http://tiswww.case.edu/php/chet/bash/bashtop.html">bash version 4.0, there is a new concept called coproc. This is very useful for some of the daily tasks.

co-<a class="zem_slink freebase/guid/9202a8c04000641f800000000005a409" title="Process (computing)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Process_%28computing%29">process starts a process in the background, optionally with a NAME, with which other processes can communicate. This can be a very <a class="zem_slink freebase/en/substitute_good" title="Substitute good" rel="wikipedia" href="http://en.wikipedia.org/wiki/Substitute_good">good substitution for <a class="zem_slink freebase/guid/9202a8c04000641f800000000048fac5" title="Pipeline (Unix)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Pipeline_%28Unix%29">pipes in lots of cases. You can learn more about coproc in the link below:

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