How To Build A Self-hosted WordPress Blog For Free

2010-02-04 1 min read Linux

A blog is a layman-friendly variation of a website, and having a blog is one of the many ways to state your presence in the virtual world. While there are many hassle-free blog services out there that will take care of everything except automatically blog for you – like <a href="http://www.makeuseof.com/tags/blogger">Blogger and <a href="http://www.makeuseof.com/tags/wordpress">WordPress, nothing can beat a self-hosted blog in the terms of customization and self pride.

The problem is, the process of building your own self-hosted blog is (almost always) not free and is considered complicated. So most newbies will choose the easier path and never give themselves a chance to experiment.

Splitting strings with IFS

2010-02-04 2 min read Bash Linux

Today I want to discuss splitting strings into tokens or “words”. I previously discussed how to do this with the <a href="http://bashcurescancer.com/reading-a-file-line-by-line.html">IFS variable and promised a more in depth discussion. Today, I will make the case on WHY to use IFS to split strings as opposed to using a subshell combined with <a class="zem_slink freebase/en/awk" title="AWK" rel="homepage" href="http://cm.bell-labs.com/cm/cs/awkbook/index.html">awk or cut.

I wrote this script which reads the /etc/password file line-by-line and prints the <a class="zem_slink freebase/en/user" title="User (computing)" rel="wikipedia" href="http://en.wikipedia.org/wiki/User_%28computing%29">username of any user which has a UID greater than 10 and has the shell of /sbin/nologin. Each test function performs this task 10 times to increase the length of the test:

Kill processes that have been running for more than a week

2010-02-04 1 min read Linux

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

<span style="font-size: x-large;"><a href="http://feedproxy.google.com/~r/Command-line-fu/~3/kr_otvdAVxA/kill-processes-that-have-been-running-for-more-than-a-week">Kill processes that have been running for more than a week
$ find /proc -user myuser -maxdepth 1 -type d -mtime +7 -exec basename {} ; | xargs kill -9

<a href="http://www.commandlinefu.com/commands/view/3702/kill-processes-that-have-been-running-for-more-than-a-week">View this command to comment, vote or add to favourites
<a href="http://feeds2.feedburner.com/commands/by/sharfah">View all commands by <a href="http://feeds2.feedburner.com/commands/by/sharfah">sharfah

by David Winterbottom (<a href="http://codeinthehole.com">codeinthehole.com)

Execute mysql command from shell

2010-02-04 1 min read Database

phpMyAdmin is a very slow application if you want to execute a query on your database. If you know the name of the database then any GUI tool is an overhead. So I have written a one liner shell script to do that for me 🙂

Here’s the script:

echo ”select * from table where field like ”%$1%””|mysql -h doamin.com -u amit -p -D amit -r –password=hello

When run with one argument it will execute the sql query directly without asking for password also.

Packagekit Error

2010-02-04 1 min read Fedora

With the latest update on my Fedora 10(F10) I started getting this error when ever I wanted to use the gnome package kit (I was able to use yum though):
failed to get a TID: A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface ”org.freedesktop.PackageKit.Transaction” member ”SetLocale” error name ”(unset)” destination ”org.freedesktop.PackageKit”) (0)

I searched couple of forums but did not find any good resource on what was happening. Finally I decided to rollback Packagekit and dbus. And Yahoooooooooooo, it started working again.

Color in grep output to distinquish the matching entries

2010-02-04 1 min read Linux

Most of the times I end up spending a lot of time to look for the string in the grep output when I do a search. This is quite frustrating and thus I looked at the options for grep command that would make my life easier and there definately is something. Here it is:

export GREP_COLOR=”5;36”

But for this to work you would still need to give the ”–color=auto” option in the grep command. There are two ways to do this, create a alias for grep as ”grep –color=auto” or specify the same in GREPOPTIONS.

kernel source code — the easier way to get it with git.

2010-02-04 1 min read Fedora

The simplest way to get the kernel code is :

git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

If you want to get the other branches then head over to <a href="http://git.kernel.org">”Kernel Git Page”

This will get the Linux kernel tree. As of today , 12 days ago, the tree was tagged to 2.6.31.

Now thats cool, but do you want it to be simpler and do not want to know the git command get to what you want to do that is learn linux kernel then here\’s what you can do :

sudo yum install teamgit

Here is the interface that you will get to add new repo:

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