Intermediate Linux / Unix System Administrator Tutorials

These tutorials assumes that you have strong understanding of Unix like operating systems and very comfortable with most aspects of the Unix/Linux operating system. Familiar with fundamental networking/distributed computing environments is required. ( rss feed )

What Is SELinux?

by on December 6, 2012 · 1 comment

What is SELinux? Why should I use SELInux on my CentOS or Red Hat Enterprise Linux server running on IBM hardware?

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Debian / Ubuntu: Install Latest Version Of OpenSHOT on-Linear Video Editor

by on December 6, 2012 · 0 comments

OpenShot is a free and open source video editor designed to create videos on Linux. This app act as an alternative to iMoive or Windows Movie Maker. I am using Debian Linux 6.x. This version ships with an older version of OpenSHOT software. How can I install the latest version of OpenSHOT under Debian GNU/Linux?

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HowTo: Linux Limit A Specific User’s Shell Account Network Bandwidth Using Bash Shell

by on December 4, 2012 · 8 comments

I am using a bash shell under Ubuntu Linux operating system. Sometime I need to restrict my own Internet bandwidth for all my shell applications such as ftp, sftp, wget, curl and friends. How do I limit the network speed under bash without setting up a complicated firewall and tc rules as described here?

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gnome-terminal: There Was An Error Creating The Child Process For This Terminal

by on December 4, 2012 · 2 comments

I am using CentOS 5 on my laptop. If I open gnome-terminal by right clicking the desktop, I am getting an error that read as follows:

There was an error creating the child process for this terminal

How do I fix this problem and open a terminal by right clicking the Debian / Ubuntu / CentOS / Fedora / RHEL / Red hat Enterprise Linux 5.x desktop system?

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HowTo: Nginx Redirect All HTTP Request To HTTPS Rewrite Rules

by on December 1, 2012 · 3 comments

I have setup nginx as a secure reverse proxy server. How do I redirect all http://example.com/ requests (traffic) to https://example.com/ under nginx web server?

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seinfo Command: Query SELinux Policy Under CentOS / RHEL / Linux

by on December 1, 2012 · 0 comments

How do I query and get information about a policy under SELinux? How do I analyze a binary or a source policy file under SELinux?

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Ubuntu / Debian Linux: Install and Setup TFTPD Server

by on December 1, 2012 · 5 comments

How do I install and configure TFTP server under Debian or Ubuntu Linux server to configure networking equipment such as remote booting of diskless devices or remote loading of Unix like operating systems via PXE boot?

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