Hey all...

I recently decided to dip my big toe into shell scripting; never really having a need for until recently. I am working on a simple little script right now which seems to work fine, only it generates an error before continueing on to execute the whole script flawlessly:

:/home/sallow>testsrv -c -u sallow
/usr/local/bin/testsrv: [: !=: unary operator expected

The appearance of the error is the only indication of an issue, as I stated above, the script performs without any issues at all.

The only area in the code in which I use a 'not equals' is here:

if [ $USERNAME != $USR ] ; then
...
fi

but I have tested this block of code to make sure that it is doing its job and there are no performance issues.. ??

All in all, since the code works, I'm not overly concerned, but at the same time, I have such a hard time leaving anything alone til its perfect

Could anyone shed any light on the meaning of this error?

Thanks in advance,

Verbal

presumably an unintialised variable. make sure each variable has a dummy value (e.g. -1 or -9999 etc..) before you could conditionally assign something to the value. also try debugging by echoing out each variables value before such operations

I do have an array earlier in the script that has a possibility of some uninitialized values, I'll play around with this thought.

Thankyou for your input!

verbal

$USERNAME is not getting set properly.