Public domain Korn shell command interpreter (UNIX)
sh [+-abCefhikmnprsuvxX] [+-o option] [ [ -c command-string [command-name] | -s | file ] [argument ...] ]
The sh shell is a public-domain version of the Korn shell. For more information, see ksh.
esh, fesh, ksh, rsh, uesh
Using the Command Line and Writing Shell Scripts in the Neutrino User's Guide