penv permanently sets environment variables. It supports the following:

• linux - entries are added to ~/.profile, logout and login is required.
• windows - entries are added to the PATH for the current user, logout may be required.
• osx - entries are added to a user launchctl script. You will have to restart programs to pick up the new environment. (ie restart your terminal)

penv is both a library and a command. To use the library in your own code see the documentation. To install the command run:

go get github.com/badgerodon/penv/...

Here's its usage:

penv <command>

Commands:
  set <name> <value>
    Permanently NAME to VALUE in the environment

  unset <name>
    Permanently unset NAME in the environment

  append <name> <value>
    Permanently append VALUE to NAME in the environment

Different operating systems / shells aren't really compatible. I'm able to discern which environment variables I'm responsible for with shells (like bash) by using their config files, but I can't do that with Windows. All appends will get collapsed into sets, and unsets aren't just masking the value, they may actually remove it.

In other words this command works but it's dangerous. If you set your PATH don't be surprised when it clears all the previous values and you can't get them back.

MIT