Hello, saint gurus.
I use flip flop operator to select/deselect certain lines in big text file ,which is output from device's log.
Somehow certain lines fit ,while other lines with the same content don't.
Is flip flop operator reliable? Please look at my code and suggest corrections.Also any performance improvement suggestions are very appreciated.

my $backup=$commandfile.".bak";             
foreach $com (keys %hashnew) { 
   $ARGV[0]="$backup";
   $^I=".bak";
   while (<>) {
     if ($hashnew{$com} == "all") {
        unless (/$hashnew{$com}/../\*\ Exit\ context\ \*/) {
             s/$com//g;
                          }
             }
     if (/$hashnew{$com}/../\*\ Exit\ context\ \*/) {
             s/$com//g;
                          }
             print;
            }          
    }

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In reply to Flip flop operator by sashac88

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