Redhat system information commands cheat sheet

1 - SYSTEM INFORMATION

uname -a                                  # Display Linux system information
uname -r                                  # Display kernel release information
cat /etc/redhat-release             # Show which version of redhat installed
uptime                                     # Show how long the system has been running + load
hostname                                 # Show system host name
hostname -I                             # Display the IP addresses of the host
last reboot                               # Show system reboot history
date                                         # Show the current date and time
cal                                           # Show this month's calendar
w                                             # Display who is online
whoami                                   # Who you are logged in as