add to the PATH on MAC

Here are some way to add to the path.

Why i do this?

In the process of testing mitmproxy, I installed mitmproxy. After the mitmproxy installer finished, it recommendedThe scripts mitmdump, mitmproxy, mitmweb, pathoc and pathod are installed in '/Users/dc/Library/Python/3.7/bin' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.. It turns out there is avery neat way to do this in OSX, the /etc/paths file. The file contains a list of paths that are added to the $PATH variable in the shell. Here are some way to add to the path:

• Open up Terminal.
• Run the following command:

  sudo nano /etc/paths
  

• Enter your password, when prompted.
• Enter the path you want to add on the bottom of the file.
• Hit control-x to quit
• Enter Y to save the modified buffer.
• Then, open new terminal window, type：

  echo $PATH
  

• You should see something similar to this(including the path you’ve added!):

  /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/dc/Library/Python/3.7/bin:/usr/local/go/bin:/Applications/Wireshark.app/Contents/MacOS