On Thu, Jun 24, 2010 at 03:44:34AM +0100, RW wrote: Hello,
> On Thu, 24 Jun 2010 03:37:55 +0200 > Thomas <f...@gothschlampen.com> wrote: > > > On Thu, Jun 24, 2010 at 09:24:39AM +0800, Aiza wrote: > > > > Hello, > > > > > Receiving a variable from the command line that is suppose > > > to contain numeric values. > > > > > > How do I code a test to verify the content is numeric? > > > > http://www.google.com/search?q=shell+test+if+variable+numeric > > > > First link => > > http://www.unix.com/shell-programming-scripting/46276-check-variable-if-its-non-numeric.html > > > > Gosh, Google is full of answers these days.. > > I'd suggest looking a bit further down the list since the quoted first > link is patently wrong. t...@eternity:~$ b=5 t...@eternity:~$ case "$b" in > [0-9] ) > echo numeric > ;; > * ) > echo alpha > ;; > esac numeric t...@eternity:~$ Works for me. Another solution would be like this: if echo "$b" | egrep -q '^[0-9]+$'; then and eventual variants of it. Regards Thomas _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
