Linux Commands-uname

The uname command is used to print information about the current system (kernel version number, hardware architecture, host name, operating system type, and so on).

-A or--all: displays all information;
-M or--machine: Displays the computer type;
-N or-nodename: the name of the host displayed on the network;
-R or--release: Displays the operating system's release number;
-S or--sysname: Displays the operating system name;
-V: Displays the version of the operating system;
-P or--processor: output processor type or "unknown";
-I or--hardware-platform: output hardware platform or "unknown";
-O or--operating-system: output operating system name;

Yes, that's right, this parameter can show the number of bits in the operating system.

Or simple: The Arch command can also look at the number of bits in the operating system.

Linux Commands-uname