Question

我想创建一个简单的女巫案例，我可以根据用户提示执行功能：

echo Would you like us to perform the option: "(Y|N)"

read inPut

case $inPut in
# echoing a command encapsulated by
# backticks (``) executes the command
"Y") echo 'Starting.....'
donwload_source_code


# depending on the scenario, execute the other option
# or leave as default
"N") echo 'Stopping execution'
exit
esac

但是当我执行脚本时，我收到错误：

Would you like us to perform the option: (Y|N)
n
run.sh: line 27: syntax error near unexpected token `)'
run.sh: line 27: `"N") echo 'Stopping execution''
EMP-SOF-LT099:Genesis Plamen$

道你知道我怎么解决这个问题吗？

Answer 1

添加;;

#!/bin/bash
echo Would you like us to perform the option: "(Y|N)"

read inPut

case $inPut in
# echoing a command encapsulated by
# backticks (``) executes the command
"Y") echo 'Starting.....'
donwload_source_code


# depending on the scenario, execute the other option
# or leave as default
;;
"N") echo 'Stopping execution'
exit
;;
esac

Answer 2

多个问题。

在每个;;构建

case

exit命令在switch-case构造中放错了，而;;没有case。它应该在read或更高的末尾。
echo有自己的选项可以为用户提示打印消息，可以避免不必要的#!/bin/bash read -p "Would you like us to perform the option: \"(Y|N)\" " inPut case $inPut in # echoing a command encapsulated by # backticks (``) executes the command "Y") echo 'Starting.....' donwload_source_code ;; # depending on the scenario, execute the other option # or leave as default "N") echo 'Stopping execution' exit ;; esac。

无错误的脚本

function CMChangeSignal(constant) {
    /** take initial value here if it  possible and pass it to constan fnt */
    var out = constant();
    // listen to it
    CodemirrorInstance.on('change',function(cMirror){
        // get value right from instance
        var newValue = cMirror.getValue();
        out.set(newValue);
    });
    return function () {
        return out;
    }
}

bash脚本切换案例出错

2 个答案: