Why do you shell out when you can do it in pure Perl?
Just an example to be adapted to your specific needs:
my $word = "banjo";
my $found_it = pseudo_bash_grep ($word, "words.txt");
print "Found $word in the words.txt file \n" if $found_it;
sub pseudo_bash_grep {
my ($keyword, $file) = @_;
open my $FILE_IN, "<", $file or die "Failed to open $file $!";
while (<$FILE_IN>) {
return 1 if /$keyword/;
}
return 0;
}
Result:
$ perl search.pl
Found banjo in the words.txt file
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