Client Programs

Communicate with another program
That other program is usually on another computer
It is termed a server

Examples of Clients

Telnet
FTP
Cc:Mail
Web browser

Examples of Servers

Telnetd
FTPD
Sendmail
Web server (httpd)
File server (e.g. an NFS server)
A database, e.g. Oracle

Implementation

Clients and servers can be written in Perl (and many other languages)
Perl has libraries that can "speak" the HTTP, FTP, and other protocols.
You could build your own browser or FTP client in Perl if you wanted to.

This class teaches how to write Perl programs that are both clients to your database and servers to your browser.

Review

Name some more client and server programs.

Dan Keller Technical Services © 2000