topic Script Help in Operating System - HP-UX

Script Help

Glynn Aherne_1 — Wed, 06 Feb 2002 11:20:00 GMT

Hi Folks,

We have various environment variables set ie $mtrack_dump, $matrack_asset etc.

I'm trying to write a script that takes mtrack as an argument and then within the script add eihter the asset or dump part of the string. Then I'm trying to reference the value of the enviroment variable

i.e.

echo $"$1" gives $mtrack_asset

instead of the value of $mtrack_asset

Thanks in advance

Glynn

Re: Script Help

Justo Exposito — Wed, 06 Feb 2002 11:22:58 GMT

Hi Glyn,

Try:

echo "$1"
or
echo "${1}"

Regards,

Justo.

Re: Script Help

John Palmer — Wed, 06 Feb 2002 11:30:10 GMT

Hi,

You need to use the shell's 'eval' command to achieve this. Check it out in man sh-posix.

e.g.

mtrack_asset=

$1 is "mtrack"

eval echo \$${1}_asset

will display the contents of mtrack_asset.

Regards,
John

Re: Script Help

Glynn Aherne_1 — Wed, 06 Feb 2002 11:32:30 GMT

Justo,

echo "$1"
or
echo "${1}"

will only give me the string I'd supplied to the script

mtrack

Re: Script Help

Trond Haugen — Wed, 06 Feb 2002 11:37:56 GMT

It may not be cresious but:
echo $"$(echo $1)"
should do the work.

Regards,
Trond

Re: Script Help

Glynn Aherne_1 — Wed, 06 Feb 2002 11:43:12 GMT

John,

Perfect just what i needed

Thanks,

Glynn

Re: Script Help

Justo Exposito — Wed, 06 Feb 2002 12:49:35 GMT

Sorry Glynn, I missunderstand you.

Regards,

Justo.