Author Archives: Ahmed Tawfik

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About Ahmed Tawfik

Cybersecurity Professional, Systems Engineer, OSS & Linux Geek

How to change the default CPU governer (CPU Frequency) in Ubuntu Karmic (might work for other versions as well)

Posted on March 5, 2010 by Ahmed Tawfik

The problem is that no matter what, when I change the CPU governer using the “CPU Frequency Scaling” gnome applet in my Ubuntu Karmic, it always defaults to “ondemand”, I searched in some forums and finally developed a nice and … Continue reading →

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How to change the gnome default keyring password in Ubuntu Karmic (may apply to other versions as well)

Posted on March 5, 2010 by Ahmed Tawfik

After I initially set it, I needed to change it so that it matches my login password: Open a terminal type “seahorse” Right-click on “Passwords: login” and click “change password” Type your old password and then your new one. Done! … Continue reading →

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How to raise the log level for all events for a Siebel component from the Siebel CLI

Posted on February 24, 2010 by Ahmed Tawfik

“change evtloglvl %= log_level for comp component_name“ Thanks go to Osama Magdy for the info 🙂

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How to edit scheduled jobs (crontab) on AIX

Posted on February 23, 2010 by Ahmed Tawfik

A very useful link: http://publib.boulder.ibm.com/infocenter/discover/v8r4/index.jsp?topic=/com.ibm.discovery.ds.publish.doc/c_UG_Configuring_Cron_Job.htm

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How to change your current username on Ubuntu Linux

Posted on February 4, 2010 by Ahmed Tawfik

Beware, this action is VERY dangerous and might ruin some of your running applications, I tried it first on a virtual machine and then my actual machine and it messed up 2 or 3 apps only, I was lucky as … Continue reading →

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