Arguments for subroutines

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2 total messages Started by Kevin Burton Fri, 21 Aug 1992 18:21

#910

Author: Kevin Burton
Date: Fri, 21 Aug 1992 18:21

25 lines
1131 bytes

I have bash-1.12 and am trying to convert some CSH aliases to subroutines
in bash. I want to be able to get at all of the arguments from a specified
argument on (like !:3* in CSH).

foo ()
{
	echo $1;
# This of course does not work but I want to be able to do something
# like this.
	echo $2*;
}

I have looked on the info pages and found very little documentation at all
on these "subroutines".

Does anyone know how I might do this ? Do I have to concatenate all the the
arguments manually ? I hope not :-(

Thank you.

-
Kevin Burton
Noran Instruments				voice: (608) 831-6511 x317
2551 West Beltline Highway, Room 532		  FAX: (608) 836-7224
Middleton, WI 53562				email: kburton@noran.com

Re: Arguments for subroutines

#913

Author: Robert Elz
Date: Sun, 23 Aug 1992 15:35

49 lines
1283 bytes

In <9208211821.AA02760@iowa.YP.solsys> kburton@iowa.UUCP (Kevin Burton) writes:

| I have bash-1.12 and am trying to convert some CSH aliases to subroutines
| in bash. I want to be able to get at all of the arguments from a specified
| argument on (like !:3* in CSH).

Try ...

foo()
{
	echo $1
	shift
	echo $*
}

or if you want $1 later

foo()
{
	X=$1
	shift
	echo $*
	echo $X
}

Of course, you can also use $@ instead of $* if that's more suited.

If you need $* put back (for some odd reason "$X $*" is not good enough)
Then you can do

foo()
{
	ARGS=
	while [ $# -gt 0 ]; do
		ARGS="$ARGS '$1'"
		shift
	done
	eval set -$- $ARGS

	X=$1
	shift
	echo $*		# to get the ${2:*} effect
	shift
	echo $*		# now ${3:*}

	eval set -$- $ARGS	# now all args are back as originally
}

kre

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