Category Archives: Uncategorized

How to fix unavailable swap problem after fresh installation of Ubuntu 14.04 with Home Encryption

Posted on May 24, 2014 by Ahmed Tawfik

This is a bug which makes the UUID unreadable in the /etc/crypttab and accordingly no swap will be read and used by the system, which is unacceptable of course. In order to solve this problem, all you have to do … Continue reading →

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How to encrypt your home folder in Ubuntu or Linux Mint After Installation using ecryptfs

Posted on May 22, 2014 by Ahmed Tawfik

In case you want forgot to encrypt your home folder while installing Linux Mint or Ubuntu, it’s very easy to do that afterwards, and I’ll KISS, i.e. Keep It Simple & Stupid 🙂 login normally at the login screen, let’s … Continue reading →

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How to Upgrade your Ubuntu Server Release, The Recommended Way

Posted on February 17, 2014 by Ahmed Tawfik

It’s done using a command line utility called “do-release-upgrade”, it’s part of the update-manager-core package, so all you have to do is the following: “sudo apt-get install update-manager-core” “sudo do-release-upgrade” That’s it, simply! Source: https://help.ubuntu.com/12.04/serverguide/installing-upgrading.html

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Getting List of Users and Roles on Oracle DB

Posted on January 24, 2014 by Ahmed Tawfik

This is a simple SQL statement to get you a list of all users and their roles in the Oracle DB: “SELECT * FROM DBA_role_privs;” And if you want to get the list of users related to a specific role, … Continue reading →

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Knowing when you should be concerned about your Linux CPU Load Average

Posted on January 22, 2014 by Ahmed Tawfik

This is one of the most important things to learn by any System Admin.; the CPU Load Average. You can get the value simply by running the command “top” to get you the average value in the last 1 min, … Continue reading →

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