syntax error: operand expected (error token is " ")

Question

syntax error: operand expected (error token is " ")

I'm getting this syntax error with my current code:

log= who | grep $1 | cut -c 30-31,33-34
echo $log

time= date | cut -c 12-13,15-16
echo $time

on=$(($time - $log))
echo $on

If I remember correctly, " " stands for null. Why am I getting this?

Avinash Raj · Accepted Answer · 2014-11-06 04:51:34Z

4

Remove the space which was just after to = symbol and put the command inside $(), so that it would parse.

log=$(who | grep $1 | cut -c 30-31,33-34)

And,

time=$(date | cut -c 12-13,15-16)

answered Nov 6, 2014 at 4:51

Avinash Raj

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