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

print $c;

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

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

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

#!/usr/bin/perl -w

...
Can't use an undefined value as a symbol reference at test.pl line 4.
$ echo $?
255