Your approach is one good way to do it if you do a few minor modifications. Read your first file into a hash instead of an array for easier lookup: 

my %records;
open my $fh, "<", $file1;
/^(\S+)\s/ and $records{$1}=1 while <$fh>;
close $fh;

[download]

I am using a regular expression to find the first column in your file which seems to be simpler here and can also be used as a test. For example, empty lines will be skipped automatically this way.

Then open each of your other files in turn and check whether a given line shall be printed by doing a lookup in the hash: 

for my $file (@filelist) {
    open my $fh01, "<", $file;
    /^(\S+)\s/ and defined $records{$1} and print while <$fh01>;
    close $fh01;
}

[download]

I have skipped all checks whether files can be opened etc. You need to add those yourself.

In reply to Re: how to check if a particular value exist in list of files stored in an array by hdb
in thread how to check if a particular value exist in list of files stored in an array by Perlseeker_1

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