Can anyone explain me how to install this file?

Solution 1:

The instructions are there on the Github site, but they are quite concise and intended for experienced users, so I'll elaborate a bit. Look under the "Linux" header. Three commands are given:

1. A wget command that allows you to download the program. This command will store the program in the current directory, so you may want to create a directory just for this purpose, let's say /home/[username]/grv, and cd into this directory. This program doesn't need to be installed, and apparently it doesn't need any additional packages or libraries.
2. A chmod command. Downloaded files are never executable straightaway, for security reasons. You must set the executable bit yourself. This command does that.
3. The command to actually launch the grv program. The path to the git repro to be viewed is a parameter. You may want to create a desktop shortcut for this program. Use /home/[username]/grv/grv as the executable path.

That is all.