regex - Print string without sub-string in Perl -


i have logfile has format looks this:

[time] [mmm] [data] [rule] [a.a.a.a] [time] [ppp] [data] [rule] [a.a.a.a] [time] [mmm] [data] [rule] [c.c.c.c]

in cant' find way print string without specific sub-string. want able print whole string output without sub-string line matches [mmm] , [a.a.a.a]. final output be:

[time] [ppp] [data] [rule] [a.a.a.a]   [time] [mmm] [data] [rule] [c.c.c.c]

do use index module 2 subtrings or use grep in someway? looking @ wrong way? appreciated!!!

in perl script have section searches , prints section string:

sub section {     @event_rule = ("a", "b", "c");      foreach (@event_rule)     {                     $result1 = `fgrep -h 'data' $logfile1 | grep "$_" | head -n10`;                     if (length $result1)                     {                         print "$result1\n";             }             }   }

no need external programs grep:

#!/usr/bin/perl use warnings; use strict;  @rule  = ('[mmm]', '[a.a.a.a]'); $regex = join '.*', map quotemeta, @rule; # create 1 regular expression "rules". $regex    = qr/$regex/;                      # compile it.  $c = 0; while (<>) {     $c += print if /data/ && ! /$regex/;     last if $c > 9;                          # print first 10 lines. }

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