Vagrant commands and other fun stuff [closed]

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I have started working on a new set of technologies recently and am having some problems understanding what it is that I am doing. I am using Vagrant, VirtualBox, Git Bash and a few other new things (new for me that is) and I was hoping someone could explain what it is that I am doing as I am familiar with Windows commands but not so much Unix ones.

So, part of the new starter guide I have been given says that I must run the following commands

vagrant up

vagrant ssh

sudu su -

tail -f /var/log/messages

Could someone explain what these all do?

Answer 1

vagrant up

Creates a new virtual machine as described in the Vagrantfile. See the vagrant doc for more information.

vagrant ssh

Uses ssh to log you into the virtual machine you made with vagrant up. Must be run from the directory containing the vagrantfile or a subdirectory beneath it.

sudo su -

See this answer

tail -f /var/log/messages

The linux tail command prints the last 10 lines of the file. The -f flag with a filename appends data to the output as the file grows. So its a way of seeing the log output in real time as the log is being written to.

You can get help for linux system commands using man <<command>>. For vagrant commands you can use vagrant <COMMAND> --help