On Tue, 11 Feb 2003 11:07:16 -0500, Gordon <[EMAIL PROTECTED]> wrote:
>I've searched all over for an answer to this and haven't found one yet!
>
>Is there a way in a bash script to test if a variable contains an
>integer? I want to create a script that uses some simple arithmetic but
>bash bombs out if you try to do a comparison or arithmetic with a
>non-numeric value. Basically, something like:
>
>read var
>if [ "$var" is a number ]; then
> do something
>else
> echo var is not a number
>f
alternative, indirect, approach:
if expr $var + 0 >/dev/null 2>&1; then
echo number
else
echo not a number
fi
--
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