Login
Before interacting with Threefold Grid with tf-grid-cli you should login with your mnemonics and specify the grid network:
$ tf-grid-cli login
Please enter your mnemonics: <mnemonics>
Please enter grid network (main,test): <grid-network>
This validates your mnemonics and store your mnemonics and network to your default configuration dir. Check UserConfigDir() for your default configuration directory.