Setting Up a Garry's Mod Server

Step 1 — Install SteamCMD

add-apt-repository multiverse -y
dpkg --add-architecture i386
apt update
apt install steamcmd lib32gcc-s1 -y

Step 2 — Download GMod Server Files

adduser steam && su - steam
steamcmd +force_install_dir ~/gmodserver +login anonymous +app_update 4020 validate +quit

Step 3 — Create a Startup Script

nano ~/start-gmod.sh

#!/bin/bash
cd ~/gmodserver
./srcds_run   -game garrysmod   +gamemode sandbox   +map gm_flatgrass   +maxplayers 16   +hostname "My GMod Server"   -port 27015

chmod +x ~/start-gmod.sh

Step 4 — Open Firewall Ports

ufw allow 27015/tcp
ufw allow 27015/udp
ufw allow 27005/udp

Step 5 — Start the Server

screen -S gmod ~/start-gmod.sh

Install SourceMod and MetaMod (for plugins)

cd ~/gmodserver/garrysmod
wget https://sm.alliedmods.net/smdrop/1.11/sourcemod-1.11.0-git6934-linux.tar.gz
tar -xzf sourcemod-1.11.0-*.tar.gz

Change Game Mode (Examples)

• TTT: +gamemode terrortown +map ttt_minecraft_b5
• DarkRP: +gamemode darkrp +map rp_downtown_v4c_v2
• PropHunt: +gamemode prop_hunt +map ph_office