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if (grep /$line/, $awsLists )

Using perl, grep on the lines in the file not the filename. For example (using test data instead of your command output)

#!/usr/bin/perl use warnings; use strict; my $awsLists = '/ansible/awsLists'; my @awsLists = (); if (-e $awsLists){ open my $fh,'<',$awsLists or die "$!"; @awsLists = <$fh>; close $fh; } my $cmd = 'aws ec2 describe-instances --filters "Name=instance-state-n +ame,Values=running" | grep PrivateDnsNam$'; my @output = <DATA>;#qx/$cmd/; open my $fh,'>>',$awsLists or die "$!"; foreach my $line (@output){ chomp($line); if (grep /$line/, @awsLists ){ print "$line found\n"; } else { print "$line not found - added\n"; print $fh $line."\n"; } } close $fh; __DATA__ test 1 test 89
poj

In reply to Re: String searching in file by poj
in thread String searching in file by cbtshare

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