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bashで任意の文字列が作成されるまでループする

Posted at
#!/bin/bash
set -eu

KAWAII='桑原由気'
STRINGS=(`echo ${KAWAII} | grep -o '.'`)
NUM=${#STRINGS[@]}
YUSYOU=''

while true; do
    sleep 0.05
    random=$(((RANDOM%${NUM})))
    string=${STRINGS[$random]}
    YUSYOU=${YUSYOU}${string}
    echo -n ${string}
    if [ "${YUSYOU:$((${#YUSYOU}-${#KAWAII}))}" = "${KAWAII}" ] ; then
        echo
        echo ${KAWAII}
        echo '優勝'
        break
    fi
done

実行結果

yuki.gif

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