These are the sa-mp commands from SA:MP which you can find in all servers:
/q - Close the SA:MP client.
/quit - Close the SA:MP client (same as above).
/save [extra] - Save your current coordinates into savedpositions.txt
/interior - Shows the current interior ID.
/fpslimit [20-90] - Set the maximum FPS for your client.
/pagesize [10-20] - Change the amount of lines in the chatbox.
/timestamp - Show time stamping in the chatbox.
/headmove - Toggle player's head movements.
/dl - Handy developers command to show vehicle information.
/mem - Shows the current amount of memory usage.
/rs - Saves On-Foot coordinates in rawpositions.txt
/cmpstat - Exists but doesn't seems to do anything? more info please!
/audiomsg - If this option is set to 0, no Audio Stream: messages will be displayed in the chat window when the server requests the client to connect to an audio stream.