CERN Useful Linyx Command Realtime,CPU,System Time Measurement time <program> Copy/Block IO tool dd INPUT OUTPUT 0f=<> /dev/zero /dev/null <file in> dd <file out> Block size bs=<bs> Block count count=<#> CERN CSC 2018 Data Technology ExercisesCSC 2018 Data Technology Exercises Useful Linux Command Realtime, CPU, System Time Measurement time <program> Copy/Block IO tool dd