Line Endings

Understanding And Working With Line Endings

If your workflow ever calls for working with multiple different platforms such as Windows, Linux and Mac, then you will need to be able to work with line endings. This is a common problem when working with text files.

Linux Line Endings Error

• Error message from Python: /usr/bin/env: 'python\r': No such file or directory

    gwatts@gw-x260$ ./HelloWorld.py
    /usr/bin/env: 'python\r': No such file or directory
  

• Error message from bash: /bin/sh^M: bad interpreter: No such file or directory

    gwatts@gw-x260$ ./HelloWorld.sh 
    -bash: ./clusterCheck.sh: /bin/sh^M: bad interpreter: No such file or directory
  

• Cause: Windows CRLF endings being used
• Resolution: dos2unix

  • Run dos2unix to convert line endings to Unix LF endings

      gwatts@gw-x260$ dos2unix HelloWorld.py
      dos2unix: converting file HelloWorld.py to Unix format...
    

• Reference: Scott Hanselman: Carriage Returns and Line Endings

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