Update cheatsheets

tldr/linux/natural-selection-2

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# Natural Selection 2
+
+> Start a headless Natural Selection 2 server.
+> More information: <https://naturalselection.fandom.com/wiki/Dedicated_Server>.
+
+- Start a server with the default settings:
+
+`{{path/to/server_linux}}`
+
+- Give a server a custom name that shows in the server browser:
+
+`{{path/to/server_linux}} -name '{{server_name}}'`
+
+- Specify a connection port for the server:
+
+`{{path/to/server_linux}} -port {{27015}}`
+
+- Specify maximum player count:
+
+`{{path/to/server_linux}} -limit {{2..24}}`
+
+- Specify the initial map the server starts on:
+
+`{{path/to/server_linux}} -map {{ns2_summit}}`
+
+- Limit access to the server with a password:
+
+`{{path/to/server_linux}} -password {{password}}`
+
+- Start a server with webui admin interface:
+
+`{{path/to/server_linux}} -webadmin -webport {{8080}}`