Set path environment variable in WSL-Ubuntu

[leyei]

Please fill out the below information:

• Your Windows build number: (Type ver at a Windows Command Prompt)
  Microsoft Windows [Version 10.0.17134.345]

• What you're doing and what's happening: (Copy&paste specific commands and their output, or include screen shots)
  Need to add the folders to PATH environment variable in WSL-Ubuntu and when I echo $PATH, I get path variables from Windows machine. How can I add path to WSL (Ubuntu) and it is recognised in WSL- Ubuntu too?

[therealkenc]

How can I add path to WSL (Ubuntu) and it is recognised in WSL- Ubuntu too?

I cannot parse that sentence.