Linux in a Nutshell, Fifth Edition

rdev | 369

Linux

Commands

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Options

-c ccachefile

Use ccachefile for the credentials cache file.

-C configfile

Use configfile as the configuration file.

-D port

Connect to the specified port on the remote system.

-N Always use a network connection, even when doing a local

copy. Useful for testing.

-k Attempt to get tickets for remote host; query krb_realmof-

host to determine realm.

-p Preserve modification times and modes of the source files.

-PN, -PO

Request either the new (-PN) or old (-PO) version of the

Kerberos rcmd protocol.

-r If any of the source files are directories, descend into each

directory and recursively copy all files and directories within

it. The destination must be a directory.

-x Turn on DES encryption for all data passed by rcp.

rdate

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.

Options

-l Send errors and output to syslogd.

-p Print the retrieved dates.

-s Set the local system time from the host; must be specified by

root.

-t n Timeout each retrieval attempt after n seconds.

-u Use UDP instead of TCP.

rdev

rdev [options] [image [value [offset]]]

System administration command. If invoked with no arguments,

show the current root filesystem in /etc/mtab syntax. Otherwise,

change the values ...