Bash scripting unexpected operator

Question

I\'m writing script for git hook and have trouble with if statement inside while.

File:

#!/bin/sh
while read oldrev newref          


        

Answer 1

if [ "a" == "a" ] should be if [ "a" = "a" ].

bash accepts == instead of =, but your /bin/sh probably isn't bash.

So either change the == to =, or your shebang to #!/bin/bash