iso to img convert osx
Some time you might need to convert a iso file to img format.
hdiutil convert --format UDRW -o outputfile.img inputfile.iso
DD and PV
If you want to backup a disk or just copy disk to new source dd is the command to do this.
PV(Pipe View) is a good tool to show progress of transfer, but to use PV we might need a size so the % is correct.
Help finding commands
There are to commands that might help finding the commands you are looking for.