/sys/man/1/freq freq
/sys/src/cmd/freq.c freq.c
/sys/man/1/grep grep
/sys/src/cmd/grep/main.c main.c
/sys/man/1/gview gview
/sys/src/cmd/gview.c gview.c
/sys/man/1/hoc hoc
/sys/src/cmd/history.c history.c