Library injections are less common on Linux than they are on Windows, but they're still a problem. Here's a look at how they work and how to identify them. While not nearly commonly seen on Linux ...
Essential Linux troubleshooting commands every user should know.
Using Linux, especially as a server, often means dealing with new errors and resolving them. Most of them are easy to fix with just a web search. But some errors may require that you do some digging.