On 2008-03-25, worldcyclist@gmail.com wrote:
> Hello everyone!
> I am using a bash shell script that accepts command line parms.
> For example call it "cars.sh" and it accepts a car name through $1
> Later in the script I need to have this script to call another script
> to return
> multiple parms. In fact it's a perl script (used for it's hashing
> abilities) that if you were to call it would give you this....
>
> ./return_car_values.pl Jeep
> Wrangler Green 1995
>
> The question is, how would I then parse "Wrangler", "Green" and "1995"
> into arguments by the calling program..
>
> Example program is below...
> -------------------------------------------------------
> #!/bin/bash
> CARS=$1
> ...
> ...
> `./return_car_values.pl $1`
> ------------------------------------------------------
>
> I guess my question is how do I accomplish this....
> ($MODEL, $COLOR, $YEAR) = `./return_car_values $1`

set -f
set -- `./return_car_values.pl $1`
MODEL=$1 COLOR=$2 YEAR=$3


--
Chris F.A. Johnson, author <http://cfaj.freeshell.org/shell/>
Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
===== My code in this post, if any, assumes the POSIX locale
===== and is released under the GNU General Public Licence

Hello everyone!
I am using a bash shell script that accepts command line parms.
For example call it "cars.sh" and it accepts a car name through $1
Later in the script I need to have this script to call another script
to return
multiple parms. In fact it's a perl script (used for it's hashing
abilities) that if you were to call it would give you this....

../return_car_values.pl Jeep
Wrangler Green 1995

The question is, how would I then parse "Wrangler", "Green" and "1995"
into arguments by the calling program..

Example program is below...
-------------------------------------------------------
#!/bin/bash
CARS=$1
....
....
`./return_car_values.pl $1`
------------------------------------------------------

I guess my question is how do I accomplish this....
($MODEL, $COLOR, $YEAR) = `./return_car_values $1`

Many thanks!
JC

worldcyclist@gmail.com wrote:

> I guess my question is how do I accomplish this....
> ($MODEL, $COLOR, $YEAR) = `./return_car_values $1`

I don't think you can do that directly with sh, however you can have those
values assigned as positional parameters, eg (assuming return_car_values.pl
returns "model1 red 2005")

ret=`return_car_values.pl`

eval set -- "$ret"

# now $1, $2 and $3 are set to "model1", "red" and "2005" respectively

--
All the commands are tested with bash and GNU tools, so they may use
nonstandard features. I try to mention when something is nonstandard (if
I'm aware of that), but I may miss something. Corrections are welcome.

A very public thanks to Chris for this fix and the heads up on the
book! Also thanks to pk, I didn't try your fix but Chris' worked right
off the bat.
Really, it's great there are folks like you that out the clueless
like myself.
JC

On Mar 25, 3:40 pm, pk <p...@pk.invalid> wrote:
> worldcycl...@gmail.com wrote:
> > I guess my question is how do I accomplish this....
> > ($MODEL, $COLOR, $YEAR) = `./return_car_values $1`
>
> I don't think you can do that directly with sh, however you can have those
> values assigned as positional parameters, eg (assuming return_car_values.pl
> returns "model1 red 2005")
>
> ret=`return_car_values.pl`
>
> eval set -- "$ret"
>
> # now $1, $2 and $3 are set to "model1", "red" and "2005" respectively
>
> --
> All the commands are tested with bash and GNU tools, so they may use
> nonstandard features. I try to mention when something is nonstandard (if
> I'm aware of that), but I may miss something. Corrections are welcome.