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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.

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ypbind [options]

NFS/NIS command. NIS binder process. ypbind is a daemon process typically activated at system startup time. Its function is to remember information that lets client processes on a single node communicate with some ypserv process. The information ypbind remembers is called a binding--the association of a domain name with the Internet address of the NIS server and the port on that host at which the ypserv process is listening for service requests. This information is cached in the file /var/yp/bindings/domainname.version.



Ignore configuration information in /etc/yp.conf and directly request configuration information from a remote system using ypset.


Allow connections to servers using normally illegal port numbers. Sometimes needed for compatibility with other versions of ypserv.


Check configuration file for syntax errors, then exit.


Run in the foreground process instead of detaching and running as a daemon.

-f file

Read configuration information from file instead of /etc/yp.conf.


Don't ping remote servers to make sure they are alive.


Print version information, then exit.


Allow remote machine to change the local server's bindings. This option is very dangerous and should be used only for debugging the network from a remote machine.


ypset requests may be issued from this machine only. Security is based on IP address checking, which can be defeated on networks on which untrusted individuals may inject packets. This option is not recommended.

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