linux-tutorial/codes/shell/demos/statement/select-demo.sh

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#!/usr/bin/env bash
PS3="Choose the package manager: "
select ITEM in bower npm gem pip
do
echo -n "Enter the package name: " && read PACKAGE
case ${ITEM} in
bower) bower install ${PACKAGE} ;;
npm) npm install ${PACKAGE} ;;
gem) gem install ${PACKAGE} ;;
pip) pip install ${PACKAGE} ;;
esac
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break # 避免无限循环
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done