Novice Linux / Unix System Administrator Tutorials

These tutorials assumes that you have basic understanding of Unix like operating systems and you are familiar with – Unix/Linux and its commands at the user level, know how to edit files, familiar with the Bourne shell/Bash/Ksh shell, know how to perform standard file processing tasks (such as find/move/copy/delete/) and so on. ( rss feed )

Apache 2: Reload HTTPD Configuration File Without Restarting Apache Config Changes

by on April 28, 2013 · 2 comments

I made changes to the httpd.conf file. How do I reload the new config changes without restarting the Apache 2 web server under Debian / CentOS Linux operating systems?

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Linux / Unix: Shell Remove Empty Lines

by on April 24, 2013 · 1 comment

I am a new Linux user. I have text files with lots of empty lines. How do I delete all empty lines under Linux or Unix operating systems?

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Bash: .* Considered Harmful To Match Dot Files. Why?

by on April 24, 2013 · 4 comments

How do I match dot files under Unix / Linux using bash shell? Why .* considered as harmful when matching dot files under bash shell?

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HowTo: Unix rm All Files In a Directory

by on April 24, 2013 · 3 comments

I am a new Unix user. How do I rm (remove) all files in a directory called personal-files under Unix like operating systems?

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Bash Function: Find Number Of Arguments Passed

by on April 24, 2013 · 1 comment

How do I find out number of arguments passed to my bash function called foo() under Unix like operating systems?

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The Following Packages Were Automatically Installed And Are No Longer Required Warning

by on April 24, 2013 · 1 comment

I have the following message whenever I use the apt-get command under Debian or Ubuntu Linux:

The following packages were automatically installed and are no longer required:
libaccess-bridge-java libjs-mochikit python-cheetah libjs-excanvas
libaccess-bridge-java-jni sabnzbdplus-theme-smpl tzdata-java
ca-certificates-java
Use ‘apt-get autoremove’ to remove them.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

How do I fix this issue? Is it safe to remove all unwanted packages?

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HowTo: Check If a Directory Exists In a Shell Script

by on April 14, 2013 · 1 comment

How do I check if a directory exists in a shell script under Linux or Unix like operating systems?

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