Question

所以我在理解如何循环一个条件时遇到了问题。这是我的例子：

#!/bin/bash
echo " Which team do you prefer, FSU or UF?"
read -r TEAM
while [ "$TEAM" != "FSU" || "UF" ]; do
        echo "That was not one of your choices. Please choose FSU or UF"
if [ "$TEAM" == "FSU" ]; then
        echo "You chose the better team"
else [ "$TEAM" == "UF" ];
        echo "You did NOT choose the better team"
fi
done

基本上，我正在寻找的是用户输入，如果不满足该条件，它将循环回来，直到满足正确的输入。我究竟做错了什么？在这个例子中，如果我选择FSU或Uf之外的输入为：

，我会收到错误

＆＃34; ./ test.sh:line 4：[：missing`]＆＃39; ./test.sh:line 4：UF：命令未找到＆＃34;

但是，如果我选择FSU或UF，我会得到同样的错误。

Answer 1

修正脚本：

#!/bin/bash
echo " Which team do you prefer, FSU or UF?"
read -r TEAM
while [[ "$TEAM" != "FSU" && "$TEAM" !=  "UF" ]]; do
        echo "That was not one of your choices. Please choose FSU or UF"
        read -r TEAM
done
if [[ "$TEAM" == "FSU" ]]; then
        echo "You chose the better team"
else [[ "$TEAM" == "UF" ]];
        echo "You did NOT choose the better team"
fi

的变化：

查看Done位置，您需要在用户输入验证通过后退出while loop。

您需要在输入失败后询问用户的输入。因此read -r TEAM中的while loop。

OR中您的逻辑比较为AND而不是while loop。

Bash脚本 - 使用if / then时的条件

1 个答案: