Summary
SourceMod is a plugin commonly present in Steam games like Team Fortress 2 that adds many features to game servers, such as voting systems, minigames, or general server utilities. MetaMod is generally required for SourceMod to run properly, and as a result, they are almost always installed side by side. One key feature SourceMod added is adding an admin system, which is not present within vanilla Team Fortress 2.
How to Add SourceMod and MetaMod to a Team Fortress 2 Server
1. From the MetaMod website, choose the Linux version (always choose Linux regardless of the OS used). 
2. Choose the Linux version From the SourceMod website (regardless of the OS used).
3. From the desktop, right-click and create a new folder (folder name does not matter). 
4. Extract the MetaMod and SourceMod files that were downloaded previously into the new desktop folder. 
5. In the addons folder, delete the metamod.vdf file. This .vdf file must be replaced with a .vdf file specifically for Team Fortress 2. 
6. From the Make a VDF File webpage on the MetaMod website, choose the game dropdown menu and select Team Fortress 2. 
7. Choose the Generate metamod.vdf button. 
8. Place the downloaded file into the addons folder, replacing the previously deleted .vdf file.
9. Return to the desktop's new folder and select the addons and cfg folders. Right-click and choose Send to-Compressed (zipped) folder. 
10. Log in to the BisectHosting Games Panel.
11. Stop the server.
12. Go to the Files tab.
13. Select the tf folder.
14. Choose the blue Upload button.
15. Select the zipped folder from step 9.
16. Find the .zipped folder in the tf folder, right-click, and choose Unarchive.
17. Start the server. 
