Linux in a Nutshell, Fifth Edition

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Linux

Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

-h keyfile

Read the host’s cryptographic key from the specified keyfile

instead of from the default file /etc/ssh/ssh_host_key for SSH

protocol 1, and the default files /etc/ssh/ssh_host_rsa_key and

/etc/ssh/ssh_host_dsa_key for SSH protocol 2. The -h option

may be given more than once to specify multiple keyfiles.

-i Use when running sshd from inetd.

-k seconds

Set how often the Version 1 server key should be regenerated.

Default value is 3600 seconds. If set to 0 seconds, the key will

never be regenerated.

-o setting

Pass a configuration file setting as an option.

-p port

Listen for connections on port. The default is 22. More than

one -p option may be specified. This option overrides ports

specified in a configuration file.

-q Send no messages to the system log.

-t Test configuration files and keys, then exit.

-u namelength

Specify the length of the remote hostname field in the UTMP

structure as specifed in utmp.h.Anamelength of 0 will cause

sshd to write dotted decimal values instead of hostnames to

the utmp file and prevent DNS requests unless required by the

authentication mechanism.

stat

stat [options] files

Print out the contents of an inode as they appear to the stat system

call in a human-readable format. The error messages “Can’t stat

file” and “Can’t lstat file” ...