For very small projects, it may be possible to deploy your code by hand, that is, by manually typing the sequence of commands through the remote shells that are necessary to install a new version of code and execute it on a remote shell. Anyway, even for an average-sized project, this is error-prone and tedious and should be considered a waste of most of the precious resource you have, your own time.
The solution for that is automation. The simple thumb rule could be the following:
If you needed to perform the same task manually at least twice, you should automate it so you won't need to do it for the third time.
There are various tools that allow you to automate different things, including the following: ...
