du calculate totalsize of list of files

Reading list of files and calculate the total size cat /tmp/deletepurg.txt| tr \\n \\0 | du -skh --files0-from=- --total

reading 3 lines in one time in oneliner perl

  cat PDDV_hosts.txt | perl -e 'while (my $frs=<>) { chomp $frs; $sec=<>; chomp $sec; $th=<> ;printf "%s,%s,%s", $frs, $sec, $th; }'