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21 System context

This section describes commands that print or change system-wide information.

date invocation    Print or set system date and time.
arch invocation    Print machine hardware name.
nproc invocation    Print the number of processors.
uname invocation    Print system information.
hostname invocation    Print or set system name.
hostid invocation    Print numeric host identifier.
uptime invocation    Print system uptime and load.