Linux Beginner Part-6 (Informational Commands)

Linux Informational Commands

ps                  Lists currently running process (programs).

w                  Show who is logged on and what they are doing.

df                  Report filesystem disk space usage (“Disk Free” is how I remember it)
Example: df -h

du                  Disk Usage in a particular directory. “du -s” provides a summary for the current directory. Example: du -m

top                  Displays CPU processes in a full-screen GUI. A great way to see the activity on your computer in real-time.  Type “Q” to quit.

free         Displays amount of free and used memory in the system. Example: free -m

cat /proc/cpuinfo Displays information about your CPU.

cat /proc/meminfo Display lots of information about current memory usage.

uname -a         Prints system information to the screen (kernel version, machine type,
etc.)