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While running a file entitled shuf.py in the linux environment, I run into this following error

./shuf.py -e cats and dogs
-bash: ./shuf.py: /usr/bin/python^M: bad interpreter: No such file or directory

But when i do the same thing as below, it works fine python shuf.py -e cats and dogs

I appended my PATH so that it is correct and the first line of my code is #!/usr/bin/python

I'm not sure what the problem is?

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    Looks like your script has the wrong line endings (saved on a windows machine?). You can use tr to translate, e.g. tr -d '\r' < shuf.py > shuf-new.py Commented Apr 28, 2018 at 18:38
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    use the dos2unix command line utility to convert your script Commented Apr 28, 2018 at 18:38
  • The tr command makes it work! But i also have to make sure that the code works with Python3, and when i change the first line to #!/usr/bin/python, I get the error that -bash: ./shuf-new.py: /usr/bin/python3: bad interpreter: No such file or directory Commented Apr 28, 2018 at 18:48
  • 1
    Possible duplicate of Python code from Windows to Linux, How to change end-of-line conventions?, Python script gives : No such file or directory, etc Commented Apr 28, 2018 at 20:56
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