/ bin / bash ^ M：错误的解释器：没有这样的文件或目录

Question

I am facing /bin/bash^M: bad interpreter: No such file or directory issue and I have already got the solution for it from this stack flow answer

-bash: ./my_script: /bin/bash^M: bad interpreter: No such file or directory

which works fine.

My question is every time when I restart my ubuntu machine I have to redo everything That is I execute dos2unix -k -o filename every time I start my system.

Is there any way this can be just once?

Please note: I had to create a new question because I was not able to ask the question or comment in the existing question due to less reputation

Answer 1

This is a very common problem of running a bash script from a file saved with Microsoft OS machine (a virtual machine maybe?) such as Windows or DOS.

So you know the fix to your problem.

Now you should prevent your problem reoccurring every time you login. Identify how the file is generated/copied/damaged by another resource. Like .bash_profile script or crontab script or any other management deamon.

Answer 2

The first line of your bash script should be the Shebang ( #!/bin/bash ).

I see the error says: /bin/bash But is should be changed to: #!/bin/bash

Then run:

$ dos2unix my_script

This will change all the line terminators from \\r\\n (Windows) to \\n (Linux), this will modify the original my_script file so it will persist even after a reboot.