很多时写 Shell Script 都需要使用者确认动作, 然后询问 yes 或者 no, Shell Script 里面可以这样写:
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read -r -p "Are you sure? [y/N] " response case $response in [yY][eE][sS]|[yY]) do_something ;; *) do_something_else ;; esac |
Bash 3.2 或以上版本可以这样写:
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read -r -p "Are you sure? [y/N] " response if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]] then do_something else do_something_else fi |
Bash 4.x 这样写:
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read -r -p "Are you sure? [y/N] " response response=${response,,} # tolower if [[ $response =~ ^(yes|y)$ ]] |
Hi, 我学习您提供 BASH 4.x的方法
不管回答什么答案，都是执行do_something_else这边
read -r -p “Are you sure? [y/N] ” response
response=${response,,}
if [[ $response =~ ^(yes|y)$ ]]
then
do_something
else
do_something_else
fi
Is any suggestion?