29 lines
480 B
Bash
29 lines
480 B
Bash
#!/bin/sh
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#
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# M, U - mount or unmount standard devices.
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case $#:$2 in
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1:|2:-r) ;;
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*) echo "Usage: $0 <abbreviation> [-r]" >&2; exit 1
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esac
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. /etc/fstab
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dev=$1 dir=$1
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case $1 in
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0) dev=/dev/fd0 dir=fd0 ;;
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1) dev=/dev/fd1 dir=fd1 ;;
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PS0|at0|fd0|pat0|pc0|ps0) dev=/dev/$dev dir=fd0 ;;
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PS1|at1|fd1|pat1|pc1|ps1) dev=/dev/$dev dir=fd1 ;;
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root) dev=$root ;;
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tmp) dev=$tmp ;;
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usr) dev=$usr ;;
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*) dev=/dev/$dev dir=mnt
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esac
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case $0 in
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*M) mount $dev /$dir $2 ;;
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*U) umount $dev
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esac
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