use strict;
use warnings;

use 5.010;
use Data::Dumper;

my $hashFile;
my $hashOutFH;

my %HoH = (
   LOCKS => {
      SCRIPT => {
         script1 => {
            params => [ qw{ a b c } ],
            shell => q{/bin/bash}
            },
         script2 => {
            params => [ qw{ -v } ]
            },
         },
      },
   );

open $hashOutFH, q{>}, \ $hashFile
   or die qq{open: > \ $hashFile: $!\n};
print $hashOutFH Data::Dumper->Dumpxs( [ \ %HoH ], [ qw{ *HoH } ] );
close $hashOutFH
   or die qq{close: > \ $hashFile: $!\n};

say q{File content after first write};
print $hashFile;
say q{-} x 50;

my %HoH1 = do {
   open my $hashInFH, q{<}, \ $hashFile
      or die qq{open: < \ $hashFile: $!\n};
   my $str = <$hashInFH>;
   eval $str;
   %HoH;
   };

say q{New hash as read in from file};
print Data::Dumper->Dumpxs( [ \ %HoH1 ], [ qw{ *HoH1 } ] );
say q{-} x 50;

delete $HoH1{ LOCKS }->{ SCRIPT }->{ script2 };

open $hashOutFH, q{>}, \ $hashFile
   or die qq{open: > \ $hashFile: $!\n};
print $hashOutFH Data::Dumper->Dumpxs( [ \ %HoH1 ], [ qw{ *HoH } ] );
close $hashOutFH
   or die qq{close: > \ $hashFile: $!\n};

say q{File content after key delete and second write};
print $hashFile;
say q{-} x 50;

my %HoH2 = do {
   open my $hashInFH, q{<}, \ $hashFile
      or die qq{open: < \ $hashFile: $!\n};
   my $str = <$hashInFH>;
   eval $str;
   %HoH;
   };

say q{Second new hash read in from modified file};
print Data::Dumper->Dumpxs( [ \ %HoH2 ], [ qw{ *HoH2 } ] );