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Linux Release (with Steamworks)
Here is one my versions for uc-online to be used on Linux, both x86 and x64 are separate and must be placed in the root of your game folder, or to prevent issues with duplicate filenames in the folder, I suggest making a folder to place your entire game installation inside, and then place the files from the downloaded uc-online zip next to that folder and set the config.ini file accordingly.
You may need to first run in the terminal chmod +x uc-online to be able to run it, and for 64 just run chmod +x uc-online64.
That directory should look like this if you choose to do so or need to:
~/Desktop/game/GarrysMod/
~/Desktop/game/uc-online or ~/Desktop/game/uc-online64
~/Desktop/game/libsteam_api.so
~/Desktop/game/config.ini
~/Desktop/game/steam_appid.txt