Shell脚本更改带变量的目录

I know this question has been asked numerous times, but I still could not find any good solution. Hence, asking it again if anyone can help !!

我知道这个问题已被多次询问,但我仍然找不到任何好的解决方案。因此,再次询问是否有人可以帮助!!

I am trying to change a my working directory inside a shell script with help of a variable. But I get " No such file or directory" everytime.

我试图在变量的帮助下更改shell脚本中的工作目录。但我每次都会得到“没有这样的文件或目录”。

#!/bin/bash
echo ${RED_INSTANCE_NAME}   <-- This correctly displays the directory name
cd $RED_INSTANCE_NAME       <-- This line gives the error

Now, when I try to give the actually directory name instead of using the variable, shell changes the directory without issues

现在,当我尝试提供实际目录名而不是使用变量时,shell会更改目录而不会出现问题

cd test  <-- No error

Does anyone knows what can be the issue here ? Please help !!

有谁知道这里有什么问题?请帮忙 !!

5 个解决方案

#1

You variable contains a carriage return. Try saying:

您的变量包含回车符。试着说:

cd $(echo $RED_INSTANCE_NAME | tr -d '\r')

and it should work. In order to remove the CR from the variable you can say:

它应该工作。为了从变量中删除CR,您可以说:

RED_INSTANCE_NAME=$(echo $RED_INSTANCE_NAME | tr -d '\r')

The following would illustrate the issue:

以下将说明问题:

$ mkdir abc
$ foo=abc$'\r'
$ echo "${foo}"
abc
$ cd "${foo}"
: No such file or directory
$ echo $foo | od -x
0000000 6261 0d63 000a
0000005
$ echo $foo | tr -d '\r' | od -x
0000000 6261 0a63
0000004
$ echo $'\r' | od -x
0000000 0a0d
0000002

5 个解决方案

#1

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