#!/bin/sh
#
#	M, U - mount or unmount standard devices.

match $Argc:$2 {
with 1:|2:-r	
with *	echo "Usage: $0 <abbreviation> [-r]" > !2; exit 1
}

source /etc/fstab

setglobal dev = $1, dir = $1

match $1 {
with 0	setglobal dev = '/dev/fd0', dir = 'fd0' 
with 1	setglobal dev = '/dev/fd1', dir = 'fd1' 
with PS0|at0|fd0|pat0|pc0|ps0	setglobal dev = "/dev/$dev", dir = 'fd0' 
with PS1|at1|fd1|pat1|pc1|ps1	setglobal dev = "/dev/$dev", dir = 'fd1' 
with root	setglobal dev = $root 
with tmp	setglobal dev = $tmp 
with usr	setglobal dev = $usr 
with *	setglobal dev = "/dev/$dev", dir = 'mnt'
}

match $0 {
with *M	mount $dev /$dir $2 
with *U	umount $dev
}