File: appears

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mercury 0.9-1
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#!/bin/sh
# See if the first argument appears among the following arguments.
# If yes, return true (0), otherwise, return false (1).

if test $# -lt 1
then
	echo "Usage: appears word word1 ..."
	exit 2
fi

word=$1
shift
for arg in "$@"
do
	if test "$word" = "$arg"
	then
		exit 0
	fi
done
exit 1