if statement

[Michael Welle]

Hi,

Ray Parrish <crp at cmc.net> writes:

> Hello,
>
> I am having difficulty with an if statement. Here it is -
>
> # load the sleep interval in seconds from the command line.
> interval=$2;
>     # if specified interval in seconds is less than 200 or empty, set it 
> to the default of 300 seconds
>     if  [ $interval == "" ]
>
>         then
>             interval=300; # five minutes default setting
>             echo "interval blank";
>     fi
[...]
> This happens with a single "=" as well. What am I doing wrong here?
wrong ml. 

Use  [ "x${interval}x" = "xx" ] for comparing the value of the variable
with a string.

Regards
hmw

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