bash에서 문자열 리스트에 해당 단어가 들어가있는지 확인

#!/bin/bash
 
list="apple application apples"
word="app"
 
check=1
for member in ${list}
do
    [ "${member}" = "${word}" ] && check=0 && break
done
 
if [ $check -eq 0 ]; then
    echo "\"${word}\" is existed in list"
else
    echo "\"${word}\" is not existed in list"
fi

#!/bin/bash
 
MATCH_LIST() {
    local ret=1
    local check=$1
    shift
    local list=$*
 
    for member in ${list}
    do
        [ "${member}" = "${check}" ] && ret=0 && break
    done
 
    return $ret
}
 
list="apple application apples"
word="app"
 
MATCH_LIST ${word} ${list}
ret=$?
 
[ $ret -eq 0 ] \
    && echo "\"${word}\" is existed in list" \
    || echo "\"${word}\" is not existed in list"