Predictive Hacks

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.
Mon Oct 25 19:54:48 EEST 2021
  • uptime: It returns how much time your system is up.
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
  • uname: It returns the name of the operating system.

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

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