[Unit]
Description=dedicated counter-strike 1.6 server
Wants=network.target
PartOf=steam-tmux-master.service
After=steam-tmux-master.service

[Service]
Type=oneshot
WorkingDirectory=/home/steam/counter-strike1.6
User=steam
Group=steam
Environment=STEAMOS=1
Environment=STEAM_RUNTIME=1
Environment="DBUS_FATAL_WARNINGS=0"
Environment="ADMIN=STEAM_[REDACTED]"
RemainAfterExit=yes
ExecStart=/usr/bin/tmux new-session -s cstrike -d /home/steam/counter-strike1.6/start-server.sh
ExecStop=/usr/bin/tmux send-keys -t cstrike "/quit" Enter

[Install]
WantedBy=multi-user.target