Script Help

[Glynn Aherne_1]

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

[Justo Exposito]

Hi Glyn,

Try:

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

Regards,

Justo.

[John Palmer · Accepted solution]

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

[Glynn Aherne_1]

Justo,

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

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

mtrack

[Trond Haugen]

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

Regards,
Trond

[Glynn Aherne_1]

John,

Perfect just what i needed

Thanks,

Glynn

[Justo Exposito]

Sorry Glynn, I missunderstand you.

Regards,

Justo.