You can pass your $warn_list_arg to STDIN of your $perl_file 

 open(SCRIPT, "| perl $perl_file $comp")
    or die "can't run $perl_file: $!";

 print SCRIPT $warn_list_arg;

 close(SCRIPT)
   or die "can't close $perl_file: $!";

[download]

see perlopentut, open

In reply to Re: Passing huge args to system call by ccn
in thread THANKS TO ALL: Passing huge args to system call by bubulik

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