System Info Commands in Unix

We will provide you with some useful commands in Unix where you can get information about your system.

• date: It returns the current datetime.

date

Mon Oct 25 19:54:48 EEST 2021

• uptime: It returns how much time your system is up.

uptime

19:57:02 up 2 days, 30 min,  0 users,  load average: 0.52, 0.58, 0.59

• users: It returns all the users who are logged into the system.

• who: It returns the users that are logged-in and gives us a listing for each one of those log-ins
• whoami: It returns the username of the current user when this command is invoked

whoami

g_pipis

• uname: It returns the name of the operating system.

uname

Linux

If you want more details, you can add the -a option.

uname -a

• df: It returns the amount of the free space on the disk

df -h

• du: It returns the size of a file or directory

du -h /path 

Or, if you want to see the size per file within the directory.

du -ha /path