To avoid hard-coding any line numbers you can use the "caller" function:
http://perldoc.perl.org/functions/caller.html
Here's a simple example:
#!/usr/bin/perl
exit main();
sub main
{
print_error("test1");
print_error("test2");
print_error("test3");
return 0;
}
sub print_error
{
my ($error) = @_;
my $line = (caller(0))[2];
print "line " , $line , ": " , $error , "\n";
}
This will print:
-bash:perl$ perl caller.pl
line 6: test1
line 7: test2
line 8: test3
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