On Mon, May 30, 2005 at 12:42:52AM -0700, m ike wrote:
>this
>
> convert -draw "line 10,10,20,20" text.jpg out.jpg
>
>draws a line on the image from 10,10 to 20,20
>
>so does this:
>
> g="line 10,10,20,20"
> convert -draw "$g" text.jpg out.jpg
>
>but this chokes:
>
> g='-draw "line 10,10,20,20"'
> echo $g
> convert $g text.jpg out.jpg
>
>appearantly convert is seeing "line 10,10,20,20" as two
>arguments, divided at the space.
probably, you could try experimenting with IFS (man bash) to get a
better understanding, but I doubt you will want to change that, for your
own sanity.
On what you wrote, I can't tell why you want to do this. But, I imaging
the use of a function to wrap convert will get you their more easily.
myconvert () {
case $1 in
line)
convert -draw "$1 $2,$3,$4,$5" /dev/stdin /dev/stdout
;;
*)
echo "I can't do $@" >/dev/stderr
return 1
;;
esac
myconvert line $a $b $c $d <somefile.jpg >out.jpg
(untested)
// George
--
George Georgalis, systems architect, administrator Linux BSD IXOYE
http://galis.org/george/ cell:646-331-2027 mailto:[EMAIL PROTECTED]
--
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