我想暂停shell脚本中的输入,并提示用户进行选择。标准的是、否或取消类型问题。如何在典型的bash提示符中完成此操作?
当前回答
您可以编写一个函数来测试:
confirm() {
local ans IFS=;
while read -rp "$1" -n1 ans;
do printf '\n';
case $ans in [Yy]) return 0;;
[Nn]) return 1;;
esac;
done;
}; ## Usage: if confirm "Are you sure? "; then ...
if confirm "Does everything look ok...reboot now? [Y/n]"; then
echo "rebooting..."
sleep 5
reboot
fi
其他回答
一个衬垫:
read -p "Continue? [Enter] → Yes, [Ctrl]+[C] → No."
这假设“否”和“取消”具有相同的结果,因此没有理由区别对待它们。
echo "Please enter some input: "
read input_variable
echo "You entered: $input_variable"
read -p "Are you alright? (y/n) " RESP
if [ "$RESP" = "y" ]; then
echo "Glad to hear it"
else
echo "You need more bash programming"
fi
使用PyInquirer的一行python替代方案
python3 -c 'import PyInquirer; print(PyInquirer.prompt([{"type":"confirm", "message":"Do you want to continue?", "name":"r"}]).get("r"))'
它支持yes/no/cancel(intr,CTRL+C)。
我为回答是/否问题编写了一个小脚本:https://github.com/optimistiCli/getans
例子:
#!/bin/bash
if ! getans.sh 'Shall we proceed?' y ; then
echo "User said “NO”"
exit 1
fi
echo "User said “YES”"
# do something usefull
exit 0
直接链接:https://github.com/optimistiCli/getans/raw/main/getans.sh