Unix and Linux Tutorials

Below are a some tutorials and information Unix and Linux technologies

Linux & Unix

• Generate an up to date image to install a CentOS or RedHat system over the network
• Notes on implementation of IPv6 on a Linux machine
• Bash and Ksh command line history editing. How to recall and edit your command line history using the GNU Bourne-Again and the Korn shells.
• A Quick Vi/Vim tutorial and reference sheet.
• Passwordless logins with ssh - the Secure Shell.
• Checking a ssh server key fingerprint

Snippets of scripts

• A shell script template showing Shell Option Parsing, both single letters like -v and also long options like --help
• Another shell script template showing another way of Shell Option Parsing, both single letters like -v and also long options like --help
• A shell script template showing Simpler Shell Option Parsing, just recognises single letters & the long option --help, this is often enough (people expect a --help option).

The first of the above 3 is probably what you would want to use. It is simpler and cleaner.

Shell script templates

• Shell script skeleton (also listed above)
• Shell script skeleton suitable for a daemon — contains more useful functions than Skeleton.sh

Note that all of the templates on this page are for the Korn shell - ksh

License and copyright

All description & sample files copyright (c) variously 2005, 2013 Parliament Hill Computers. Author: Alain D D Williams.

You may used these files as the basis your own (or organisation's/company's) project(s) (under whatever licence that you see fit). You may not claim ownership or copyright of any substantially unmodified files. Acknowledgement would be appreciated, but is not necessary.

These demonstrations are made available in the hope that they are useful. There may be errors: there is no warranty at all, use at your own risk.