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16 lines
333 B
Bash
Executable File
16 lines
333 B
Bash
Executable File
#!/bin/sh
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set -e
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case "$1" in
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"-N") fwd=-N; rev=-R; verb="applied";;
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"-R") fwd=-R; rev=-N; verb="reversed";;
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*) echo >&2 "Usage: $0 <-N|-R> <patch-file>"; exit 2;;
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esac
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if patch --dry-run -f $rev -p1 < "$2" >/dev/null; then
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echo >&2 "patch already $verb: $2"
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exit 0
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fi
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patch --dry-run -f $fwd -p1 < "$2"
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patch -f $fwd -p1 < "$2"
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