mysqltuner.pl: env: bad interpreter: No such file or directory

[gralex54]

Hello,

The new version does not work on CentOS 6,7,8 and fails with the error:

mysqltuner.pl: env: bad interpreter: No such file or directory

see it has no path for env:

#!env perl
# mysqltuner.pl - Version 2.5.3
# High Performance MySQL Tuning Script

should be

#!/bin/env perl
# mysqltuner.pl - Version 2.5.3
# High Performance MySQL Tuning Script

[FabioPedretti]

Fix is in #767.