Linux script execution error runserver.sh: line 2: $'\r': command not found

When starting rocketmq, mqtt has been unable to start. Looking at the log, I found that the script execution error was reported: runserver.sh: line 2: $'\r': command not found

• Error screenshot
  

• Centos solution:

  • yum -y install dos2unix
    

• dos2unix file name
  dos2unix 你的文件名
  The author here is:dos2unix runserver.sh

• Method Two:

  • Open the file and add in the first line
    :set ff=unix
    Save and exit