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Annotation of 40BSD/cmd/vipw.sh, revision 1.1

1.1     ! root        1: cp /dev/null /etc/vipw.lock
        !             2: chmod 0 /etc/vipw.lock
        !             3: ln /etc/vipw.lock /etc/ptmp > /dev/null 2>& 1
        !             4: case $? in
        !             5: 0)
        !             6:        trap '' 1 2 3 15
        !             7:        vi /etc/passwd
        !             8:        rm /etc/ptmp
        !             9:        ;;
        !            10: *)
        !            11:        echo Temporary file busy, try again later.
        !            12:        ;;
        !            13: esac

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