[plug] problem found in "if" statement

[Jon Miller]

#!/bin/sh

Jon L. Miller, MCNE, CNS
Director/Sr Systems Consultant
MMT Networks Pty Ltd
http://www.mmtnetworks.com.au

"I don't know the key to success, but the key to failure
 is trying to please everybody." -Bill Cosby



>>> bernie at innovative.iinet.net.au 1:26:52 PM 27/08/2003 >>>
On Wed, Aug 27, 2003 at 09:13:12AM +0800, Jon  Miller wrote:
> I've found a problem in an "if" statement and cannot find a fix.  The statement is
> if [ "$vMLSTAT" >= 0 ]; then
>   .....

That looks like a syntax error to me; but I don't know which shell
you're using.

>   .....
> 
> fi

Try "-ge" instead of ">="

>  I'm getting a unary operator expected.  I've tried also the
>  following and got a error message stating that [ : : integer
>  expression expected

> if [ "$vMLSTAT" -lt 0 ]; then
>    ......
>    ......
> fi

That can happen if the variable isn't set to anything.
A "hack" around that problem is to prefix the "number" with a
literal zero e.g.

	if [ 0"$vMLSTAT" -lt 0 ]; then

which works for positive numbers only!

Korn (and Bash, IIUC) shells allow type definitions for variables.

-- 
/"\ Bernd Felsche - Innovative Reckoning, Perth, Western Australia
\ /  ASCII ribbon campaign | I'm a .signature virus!
 X   against HTML mail     | Copy me into your ~/.signature
/ \  and postings          | to help me spread!