commands/scripts/M.sh

   1 #!/bin/sh
   2 #
   3 #       M, U - mount or unmount standard devices.
   4
   5 case $#:$2 in
   6 1:|2:-r)        ;;
   7 *)      echo "Usage: $0 <abbreviation> [-r]" >&2; exit 1
   8 esac
   9
  10 . /etc/fstab
  11
  12 dev=$1 dir=$1
  13
  14 case $1 in
  15 0)      dev=/dev/fd0 dir=fd0 ;;
  16 1)      dev=/dev/fd1 dir=fd1 ;;
  17 PS0|at0|fd0|pat0|pc0|ps0)       dev=/dev/$dev dir=fd0 ;;
  18 PS1|at1|fd1|pat1|pc1|ps1)       dev=/dev/$dev dir=fd1 ;;
  19 root)   dev=$root ;;
  20 tmp)    dev=$tmp ;;
  21 usr)    dev=$usr ;;
  22 *)      dev=/dev/$dev dir=mnt
  23 esac
  24
  25 case $0 in
  26 *M)     mount $dev /$dir $2 ;;
  27 *U)     umount $dev
  28 esac