if statement - How do I compare two strings in if condition in bash

Question

s="STP=20"

if [[ "$x" == *"$s"* ]]

The if condition is always false; why?

Answer 1

Try this: http://tldp.org/LDP/abs/html/comparison-ops.html

string comparison

=

  is equal to

  if [ "$a" = "$b" ]