输出保持不变

Question

无论输入如何，输出仍然＆＃34; Dead，ciao in hell＆＃34; 。

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有人请求帮助我吗？

谢谢！

Answer 1

你错过了 $ 符号

echo "Which wire to cut? Red or Green? "
read die
if [[ $die = "red" ]]; then
echo "You are saved!"
else echo "Dead,ciao in hell"
fi

<强>输出

Which wire to cut? Red or Green? 
asd
Dead,ciao in hell
Which wire to cut? Red or Green? 
red
You are saved!

Answer 2

您应该清理用户输入。说，如果他在恐慌中输入reD怎么办？他还得救了吗？

#!/bin/bash
read -p  "Which wire to cut? Red or Green?" die
die="${die:-GREEN}" # if the die's value is null, set it to GREEN
die="${die^^}" # Convert the input to uppercase
if [ "$die" = "RED" ]
then
  echo "You are saved!"
elif [ "$die" = "GREEN" ]
then
  echo "Dead,ciao in hell"
else
  echo "Confused, you deserve to die"
fi

<强>改进

• 将read prompt与-p选项
一起使用
• 为die添加了空值检查，并使用die="${die:-GREEN}"
将默认值设置为“绿色”
• 添加了elif-else部分来处理非预期值的输入。
• 由于输入已预处理，因此使用内置[[..]]替换[..]。