(coreutils.info)System context

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21 System context
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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.