shell script

Howto: Call Shell Script function In echo statement

by Vivek Gite on January 21, 2011 · 1 comment

I need to call the function called foo() using echo command in the same statement. How do I all or invoke the function using the echo statement?

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iptables: Read a List of IP Address From File And Block

by Vivek Gite on October 26, 2010 · 2 comments

How do I read a list of ip address (subnets) using a text file and block all of them using Linux iptables command?

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UNIX / Linux: Shell Scripting With mail Command

by Vivek Gite on October 2, 2010 · 3 comments

How do I send e-mails from a shell script including file attachments?

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UNIX Source Command: Read And Execute Commands From File

by Vivek Gite on August 8, 2010 · 3 comments

What is the use of UNIX source command under bash or any other shell? How do I use source command under UNIX / OS X / Linux operating systems?

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Reboot Linksys WAG160N / WAG54 / WAG320 / WAG120N Router / Gateway

by Vivek Gite on July 15, 2010 · 5 comments

I‘m using a Cisco Linksys WAG320N Router to connect my OS X UNIX and Linux systems to the Web. How do I reboot my Linksys WAG series router / gateway (modem) from UNIX / Linux / OS X bash command prompt or using a shell script?

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Bash Shell Generate Random Numbers

by Vivek Gite on April 27, 2010 · 7 comments

How do I create or generate random numbers (sequence of numbers that lack any pattern), under Bash shell?

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Iptables Limits Connections Per IP

by Vivek Gite on February 7, 2010 · 20 comments

How do I restrict the number of connections used by a single IP address to my server for port 80 and 25 using iptables?

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