#!/usr/bin/perl -w
use strict;

print $c;

##</code><code>##

$ perl ~/test.pl
Global symbol "$c" requires explicit package name (did you forget to declare "my $c"?) at /home/javi/test.pl line 4.
Execution of /home/javi/test.pl aborted due to compilation errors.
$ echo $?
255

##</code><code>##

$ ssh localhost perl ~/test.pl
Global symbol "$c" requires explicit package name (did you forget to declare "my $c"?) at /home/javi/test.pl line 4.
Execution of /home/javi/test.pl aborted due to compilation errors.
$ echo $?
255

##</code><code>##

perl test.pl || if [ \$? -eq 255 ] ; then exit 254; fi

##</code><code>##

#!/usr/bin/perl -w

print "a\n";
print $c-d;
$ perl test.pl
Name "main::c" used only once: possible typo at test.pl line 4.
a
Can't use an undefined value as a symbol reference at test.pl line 4.
$ echo $?
255