Following articles you might find useful:
Working with 'Arrays' in BASH Scripting
Simple If, If-else, If-elif-else and Nested If Statement
Very nice discussion.
Also have a look at another well composed tutorial on 'cron' : Schedule your jobs in Linux with CRON.
Getting Started - Linux Shell Scripting Language
Basic Linux Shell Scripting Language - Part II
Linux Shell Scripting - Mathematics
Check out a good article on Secure Shell in Linux.
Check out some commands related with Networking here.
You might find this article useful:
Please check out this cool tutorial on TCPDUMP
Try these articles too:
Getting Started with Linux Shell Scripting Language
Basic Linux Shell Scripting Language
Here is a cool article on iptables.
Getting Started with Linux - A Beginners' Guide
This is very interesting fact that mv command is also used to rename the files or directories.
This is a cool tutorial on basic usage of du command, please check it out:...
Please check yet another tutorial on Basics of Files/Directories Permissions and Usage of CHMOD
Please check one more interesting tutorial on chmod:
CHMOD : Basics of Files/Directories Permissions and Use of CHMOD
" Remember: CAT is the short form of Concatenate and this command is intended to concatenate multiple files. Other uses of 'cat' are considered as...
And as you said you are new to iptables, go through following tutorial as well. I felt it was handy for me....
I think, you need to configure Ubuntu machine as a router.
Follow the guidelines given in following article:...
I found an article which will clarify all your doubts regarding SSH and its installation. Here it is-...
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