June 2002
Beginner
759 pages
80h 42m
English
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Chapter 18. FTP
The File Transfer Protocol (FTP) is a popular means of transferring files between computers. FTP communication follows the client/server model: the client initiates a conversation by sending commands, and the server responds with messages and status codes, as well as by sending or receiving files. This chapter discusses two FTP-related modules included in the libnet distribution: Net::FTP, which provides a number of wrapper functions for implementing the client side of FTP, and Net::Netrc, which provides an interface for getting information from a .netrc file.
The FTP protocol permits two-way file transactions, in which files can be sent to or taken from an FTP server. These transactions involve the local filesystem (on the client side) and the remote filesystem (on the server side). When a file is transferred between the local and remote systems, its filename on the destination system is the same as on the source system, unless you specify a new filename.
The FTP protocol also lists the types of files that can be transferred. These types define (among many other things) how end-of-line characters are handled for different types of files.
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