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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

Buy it now, or read it online on Safari Bookshelf.


rdate [options] [host...]

TCP/IP command. Retrieve the date and time from a host or hosts on the network and optionally set the local system time.



Send errors and output to syslogd.


Print the retrieved dates.


Set the local system time from the host; must be specified by root.

-t n

Timeout each retrieval attempt after n seconds.


Use UDP instead of TCP.

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