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Test for mutually exclusive options in shell scripts
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#!/bin/sh | |
set -e | |
[ -z "$FIRST" -a -z "$SECOND" -a -z "$THRID" ] && { echo "FIRST, SECOND or THIRD arg must be specified"; exit 1; } | |
FIRST_ARG="${FIRST:-}" | |
SECOND_ARG="${SECOND:-}" | |
THIRD_ARG="${THIRD:-}" | |
FINAL_ARG="${FIRST_ARG}${SECOND_ARG}${THIRD_ARG}" | |
[ $FINAL_ARG == "$FIRST_ARG" -o $FINAL_ARG == "$SECOND_ARG" -o $FINAL_ARG == "$THIRD_ARG" ] || { echo "FIRST, SECOND and THIRD are mutually exclusive"; exit 1; } | |
echo $FINAL_ARG |
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