Shell script: if: Expression syntax error

Question

I have a simple if loop which is working on one server but not on another. I could grep for the word in myscript.log log file.

#!/bin/ksh

./myscript.sh install $2 $3 $4
sleep 5
if grep -q SUCCESSFUL myscript.log
then
  echo "Install is good"
else
  echo "Error occured during Install"
fi

Output:

if: Expression Syntax.

Grep outside the script:

 mymachine:~>grep SUCCESSFUL myscript.log
 Install is SUCCESSFUL

To narrow the problem, try replacing the grep expression with true and see if that works. — rkyser
– rkyser, Commented Oct 1, 2013 at 17:04
@rkyser : I replaced grep with true. Still I am getting same error if: Expression Syntax. — Jill448
– Jill448, Commented Oct 1, 2013 at 17:38

devnull · Accepted Answer · 2013-10-01 17:00:02Z

2

The error:

if: Expression Syntax

suggests that the shell you're using is not a variant of Bourne shell.

Another way to write the conditional statement would be:

grep -q SUCCESSFUL myscript.log && echo "Install is good" || echo "Error occured during Install"

(instead of the if ... fi loop.)

edited Oct 1, 2013 at 17:00

answered Oct 1, 2013 at 16:50

devnull

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1 Comment

Jill448 Over a year ago

for simplicity purpose I just gave echo statements..but I have some complex code inside..so the above code without if may not work for me

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