##
[canker:~]$ ls -l test.pl
-rwxr-xr-x 1 chris users 35 Sep 17 11:52 test.pl
[canker:~]$ cat test.pl
#!/usr/bin/env perl
print "$]\n";
[canker:~]$
####
[canker:~]$ ./test.pl
5.008008
[canker:~]$
####
[canker:~]$ PATH=/opt/perl-5.10.0/bin:$PATH ./test.pl
5.010000
[canker:~]$