Here is a list of basic Linux commands and there functions this is mainly just for my records but feel free to take a look and I hope that these can help others too. 🙂
arp – Command mostly used for checking existing Ethernet connectivity and IP address
ps – Displays all processes running on the server.
top – Displays many system statistics and details regarding active processes.
who – Tool used to monitor who is on the system and many other server related characteristics
alias – Create your own name for a command.
arch – Print the machines archithecture.
free – Display free system memory.
mail – A mail processing system, which has a command like interface.