mh

早期freebsd实现

#! /bin/sh
#	A small shell script to run the MH-system.
#	Includes the mh command directory in the PATH
#	If a (mh) command is given this is run instead.
#
export PATH; PATH=/usr/new/mh:$PATH	# the mh-system commands

if [ $# = 0 ]
then
	export PS1; PS1="MH> "		# an informative prompt used by sh
	exec $SHELL			# use the default shell
else
	exec sh -c "$*"			# run through shell
fi