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sa

Member

From: boston ma

Registered: 2008-05-23

Posts: 127

Website

writing a script to automate dd?

can i make a bash script to do something like this? i also know a little bit of C, but it seems like bash script might make more sense for the job.

i'm trying to make a script that would allow the user to enter a variable, and then use that variable to execute dd. so for instance, i want to make and ISO file named 'whatever.iso", so i could have the user type in "whatever", and it would execute "dd if=/dev/sr0 of=whatever.iso blah blah lots of options". what would be the best way to do something like this?

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: writing a script to automate dd?

Your arguments start counting at 1 (the command itself being $0). So you could do

#!/bin/bash

dd if="$1" of="$2"

That's the basic version. You could also provide a help function that not only displays if --help is called e.g. but also if not enough parameters are given.

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fukawi2

Ex-Administratorino

From: .vic.au

Registered: 2007-09-28

Posts: 6,231

Website

Re: writing a script to automate dd?

B has given you a good start... Read up on bash 'if' statements and make sure you put some tests in there to make sure the user hasn't entered "/dev/sda" as argument #2, or you'll be in trouble(!)

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moljac024

Member

From: Serbia

Registered: 2008-01-29

Posts: 2,676

Re: writing a script to automate dd?

And be extra careful with those scripts!

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