ABSTRACT
The majority of network applications are not strictly required for the network to operate, but they provide user services that are central to the network’s implementation; without them, the network serves no real purpose. Many of these applications require no special configuration. Once the UNIX system is configured properly and the network is set up (including the setup of the Internet super daemon inetd), a number of network applications can be used immediately; other network applications require some administration. Among the most common network applications, we will briefly discuss three:
1. telnet The network terminal protocol, which provides remote login over the network
2. ftp The file transfer protocol, which is used for file transfers over the network 3. finger Provides information about remote users
These applications are instrumental in daily UNIX administration. Because of their inherent interactive nature, they are primarily used from the command line, but they can also be a part of shell scripts and other programs.
