2016dfccf9
2005-09-06 Paul Eggert <eggert@cs.ucla.edu> * move-if-change: Don't output "$2 is unchanged"; suggested by Ben Elliston. Handle weird characters correctly.
23 lines
384 B
Bash
Executable File
23 lines
384 B
Bash
Executable File
#!/bin/sh
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# Like mv $1 $2, but if the files are the same, just delete $1.
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# Status is zero if successful, nonzero otherwise.
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usage="$0: usage: $0 SOURCE DEST"
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case $# in
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2) ;;
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*) echo "$usage" >&2; exit 1;;
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esac
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for arg in "$1" "$2"; do
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case $arg in
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-*) echo "$usage" >&2; exit 1;;
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esac
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done
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if test -r "$2" && cmp -s "$1" "$2"; then
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rm -f "$1"
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else
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mv -f "$1" "$2"
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fi
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