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  #1 (permalink)  
Old 02-14-2007
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variable as variable name (ksh)
Greetings folks

I'm using ksh on aix and have gone around and around trying to use a variable as a variable name. I would like to set a variable like this...

ym200702="01 02 05 06 07 08 09 12 13 14 15 16 19 20 21 22 23 26 27 28"

and then check to see if the variable has value...

if [[ ! -z "ym$YEAR$MONTH" ]]; then
echo HIT
fi

and if so I would like to set another variable to the contents of $ym200702.

For instance
someVariable=ym$YEAR$MONTH

I would like to stick with using ksh but if there are other ideas with sed/awk/perl etc let me know.

Smoker
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Old 02-14-2007
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Code:
eval someVariable=\$ym$YEAR$MONTH
if [[ ! -z "$someVariable" ]]; then
echo HIT
fi

jean-Pierre.
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Old 02-15-2007
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Thank You jean-Pierre

Smoker
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Old 05-16-2008
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Good input Jean-Pierre! I was looking for a solution for this problem too. A Google search brings me to here. Thanks a lot and cheers with a Premier Grand Cru Classé!

Best regards,
Luis Santos
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Old 05-16-2008
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If you are using ksh93, you could also use a name reference (typeset -n) instead of eval:
Code:
#!/usr/bin/ksh93

YEAR=2007
MONTH=02

ym200702="01 02 05 06 07 08 09 12 13 14 15 16 19 20 21 22 23 26 27 28"

typeset -n someVariable="ym$YEAR$MONTH"

if [[ ! -z $someVariable ]]; then
   echo HIT
fi
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