String comparison in bash is not working

Question

Hi I\'m new to bash scripting. Just wrote this simple program but it is throwing error.

#!/bin/bash
os=`uname -o`
echo $os
if [\"$os\"==\"GNU/Linux\"] ; then         


        

Answer 1

Use = for string comparison. See: http://tldp.org/LDP/abs/html/comparison-ops.html

Also, there should be a space around the square brackets and the comparison operator, i.e.

if [ "$os" = "GNU/Linux" ]; then 
  ^ ^     ^ ^           ^  
  | |     | |           |
   \-\-----\-\-----------\-- (need spaces here)

Answer 2

try

if [ "$os" = "GNU/Linux" ]

note the spaces, and the single =.

[ is actually a program, and the rest are arguments!