Cheat Sheet: system information

Gathering information of your system.

datetime information

Print or set the system date and time.

date

Display a calendar.

cal

Tell how long the system is running.

uptime

Show who is logged in.

who

Print effective userid.

whoami

Show the hostname.

hostname

Print kernel information.

uname -a

Print the cpu information.

cat /proc/cpuinfo

Print memory information.

cat /proc/meminfo