lscpu = This command will tell you the current or ongoing process in the computer.
lshw = This command will display the hardware which is used in the computer.
hdparm = It will print the details about the SSD or HDD information in the terminal.
free = This command will check the free memory in the RAM
/proc = It will print the directory of the file in terminal.
mount = It will display the accesories which are mounted or unmounted in the computer.
fdisk = It will print the details about the disk in the computer.
uname = It will print the user name in terminal
uname -s = It will print the software name.
uname -r = It will print the release version.
uname -m = It will print the machine architecture.