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my $scan = 'foo';
# here $scan == 'foo';
...

# now the $scan we defined in the if() {} is out of scope,
# gone, defunct, forgotten, inaccessible so $scan == 'foo'

print "
        =======================================
...
        =======================================

";

print "Oops";
die;

# might as well be
die "Oops";

open FILE, $somefile or die "Could not read $somefile, perl says the e
+rror is $!\n";

...
# that it binds tighter than the , operator so you need parnes thusly

open (FILE, ">$somefile") || die "Could not write $somefile, $!\n";

while ( my $line=<FILE> ) { blah }

volume ;my_hacking_script_that_will_now_get_executed.pl

system(@stuff)
check_call($custom_message,@stuff);
...
Actual call was
system( "@call" )!;
}

use Carp;

...
    main::three() called at script line 6
    main::two() called at script line 5
    main::one() called at script line 3

#!/usr/bin/perl -w
use strict;
...
    blah\n\n";
  exit;
}

package Error::Custom;

...
}

1;