topic Re: Case statement w/input range check in Operating System - Linux

Case statement w/input range check

john guardian — Sat, 09 Dec 2006 10:49:33 GMT

Hi. Will this work as is or do I need to modify? I basically want to perform a range check on a given input and perform an action based upon the NUMBER. Thanks.

case ${NUMBER} in
0-99):;;
*) :;;
esac

Re: Case statement w/input range check

James R. Ferguson — Sat, 09 Dec 2006 11:15:24 GMT

Hi John:

# cat .mycase
#!/usr/bin/sh
typeset NUMBER=$1
case ${NUMBER} in
[0-9] | [0-9][0-9] )
echo "valid number in range"
;;
* )
echo "not a number or out of range"
esac

# ./mycase 77
valid number in range
# ./mycase 100
not a number or out of range
# ./mycase 0
valid number in range

Regards!

...JRF...

Re: Case statement w/input range check

john guardian — Sat, 09 Dec 2006 11:31:27 GMT

Thanks for the info!