Copy to a location in your $PATH.
Create a config file in ~/.config/gltail.conf containing
[gltail]
hostname = $your-hostname
port = $your-port #optional, defaults to 9000
secure = $do-you-use-https?
and either
access_token = $your-access-token
or
username = $your-username
password = $your-password
If you enter username and password gltail will generate an access token on the first run and replace the username/password fields.
When using --follow it errors out sometimes, no idea why. Help welcome.