File pattern in Case

Shell Programming and Scripting
1

Hi ,

I have writen a scipt and passing one Parameter.

In the scipt i want verify the parameter patteren using Case statement.

exp:
sh script.sh 1213

Code:

i want verify the paramater values as only number not charater.

can you please advise.

2

The Case statement will already verify if the parameter is valid or not - whether the parameter is int or char. If the parameter is composed of characters, then the Case statement will select the (*) in its options.

case
1)
2)
*)
esac

If you really want to check the parameter if it's composed of numbers or characters, then use a regular expression.

PARAM=$1

echo ${PARAM} | sed '/[a-z]/!d'
3

In ksh

[[ $1 == +([0-9]) ]] && echo "is a number" || echo "is NOT a number"

also refer to this thread