1 line uuid
// using Date new Date().getTime().toString().substring(9,13) // using Random Math.ceil(Math.random()*100) // Note: add more 0s in 100 if you want to increase number length.
1 line uuid
awk '("uuidgen" | getline uuid) > 0 {print uuid, $0} {close("uuidgen")}' myfile.csv
Source: codefantasy.org