Is the shell script used to determine whether the strings are equal? (Code instance), shell script

Is the shell script used to determine whether the strings are equal? (Code instance), shell script
Shell script to determine whether the strings are equal

Basic Elements

1) Declaration of variables 2) Use of if Statements 3) Use of echo

2. The Code is as follows:

#! /Bin/bashstr1 = liushenstr2 = liutingif [$ str1 = $ str2] then echo processing else echo not found fi

The other expression of the Code adds the "" symbol to the two variables in the if statement.

#! /Bin/bashstr1 = liushenstr2 = liutingif ["$ str1" = "$ str2"] then echo has else echo not found fi