> Anyone? > > I thank you in advance for your time. > > try it before you use it ;-) Change file.csv to the name of the file #!/usr/bin/perl open (DATA, "cat ./file.csv | "); while(<DATA>) { ($userid,$rest) = split (/,/$_,2); $pass = `echo -n $userid | md5sum | cut -d" " -f1`; print "$userid,$pass"; } close(<DATA>);