Bash scripting

[Jeffrey Pyne]

How about using the "shift" shell builtin?  It moves $2 to $1, $3 to $2,
etc.  For example:

while [ "$#" -ne 0 ]
do
	case "$1" in
	noblah)
		echo Not doing blah.
		;;
	*)
		echo Doing blah;
		;;
	esac
	case "$1" in
 	nothis)
 		echo Not doing this.
		;;
	*)
		echo Doing this
		;;
	esac

	shift
done

Also, depending on what you are doing, the "getopts" shell builtin may be
able to help.  Documentation for shift and getopts can be found in the
bash(1) manpage.

Hope that helps,
~Jeff

On Monday, July 29, 2002 12:37 PM, Bryce C wrote:

> Can anyone tell me how, in a bash script, I can move the contents of
> variable $2 to variable $1 and so on?  I'm writing a bash script to
> update some stuff but I'd like to be able to type 
> script.sh noblah noit nothat
> but everything is defaulted yes.
> Currently., my script is something like
> case "$1" in
> 	noblah)
> 		echo Not doing blah.
> 		$1="$2"
> 	;;
> 	*)
> 		echo Doing blah;
> 	;;
> esac
> case "$1" in
> 	nothis)
> 		echo Not doing this.
> 		$1="$2"
> 	;;
> 	*)
> 		echo Doing this
> 	;;
> esac
> 
> That sort of thing.  Can anyone help?  Perhaps a nice online 
> reference? 
> No books though, I don't have the money or time to buy one.
> 
> Thanks,
> -- 
> Bryce Chidester
> Network Administrator
> CoBryce Communications
> Bryce AT BryceCo DOT Net
> http://www.bryceco.net

>