vex.install


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post_install() {
    if ! grep -q '/usr/bin/vex' /etc/shells; then
        echo '/usr/bin/vex' >> /etc/shells
    fi
    echo ""
    echo "  To set vex as your default shell:"
    echo "    chsh -s /usr/bin/vex"
    echo ""
}

post_upgrade() {
    post_install
}

post_remove() {
    sed -i '/\/usr\/bin\/vex/d' /etc/shells
}