Mastering Red Hat Linux 9 [Electronic resources]

dhcpcd

Starts the DHCP client for Red Hat Linux 7.2 (now obsolete).

ifport

Associates a network type such as 10baseT (Ethernet) or 100baseT (Fast Ethernet) with a network interface; it works only with a limited group of fairly generic network drivers.

ifuser

Confirms a connection to a host or an IP address via a specific network device; commonly used in a script.

innd

Starts the Internet Network News Daemon; you can use this daemon to configure newsgroups. Key configuration files are in the /etc/news directory, including inn.conf. There’s also a configuration file syntax checker, /usr/lib/news/bin/inncheck.

ncpmount

Mounts a shared Novell directory; requires the ipxutils-* and ncpfs-* RPM packages.

pump

Starts the DHCP client for Red Hat Linux 7.1 (now obsolete).

route

Lists the routing table; e.g., the route -n command lists the routing table for the local computer. Associates different IP addresses with network devices and IP gateway addresses.

slattach

Associates a network device (such as eth0) to a serial port (such as /dev/ttyS0); prepares a device for a PPP or SLIP connection.

stunnel

Incorporates SSL encryption in a direct connection between two computers over a public network such as the Internet; one way to implement virtual private networking.

su

The superuser command; a regular user who wants to assume root user privileges, and who has the root password, can use this command to log in as root. Alternatively, su -c ‘command’ can work for the single command.

sudo

The “superuser do” command; refers to /etc/sudoers for authorized users. By default, once the root password is given, the authorization is good for 5 minutes.

talkd

Starts the talk daemon, part of the talk-server-* RPM package, which can help one user initiate a conversation with another.

whois

Queries the Internet registry database; for example, administrative information for the Sybex website is available through the whois Sybex.com command.