Internet Services ARPA
(Communication among Systems w/ Different OS)
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File Transfer Protocol (
ftp)
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Transfer a file, or multiple files, from one system to another. This is often used when transferring files between a UNIX workstation and a Windows PC, VAX, etc. The following example shows copying the file
/tmp/krsort.c
from system2 (remote host) to the local directory on system1 (local host):
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Comments
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$ ftp system2
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Issue ftp command
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Connected to system2.
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system2 FTP server (Version 4.1) ready.
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Name
(system2:root): root
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Log in to system2
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Password required for root.
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Password:
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Enter password
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User root logged in.
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Remote system type is UNIX.
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Using binary mode to transfer files.
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ftp>
cd /tmp
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cd
to
/tmp
on system2
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CWD command successful
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ftp>
get krsort.c
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Get krsort.c file
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PORT command successful
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Opening BINARY mode data connection for
krsort.c
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Transfer complete.
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2896 bytes received in 0.08 seconds
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ftp>
bye
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Exit ftp
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Goodbye.
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$
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In this example, both systems are running UNIX; however, the commands you issue through
ftp
are operating system-independent. The
cd
for change directory and
get
commands used above work for any operating system on which
ftp
is running. If you become familiar with just a few
ftp
commands, you may find that transferring information in a heterogeneous networking environment is not difficult.
Chances are that you are using your UNIX system(s) in a heterogeneous environment and may therefore use
ftp
to copy files and directories from one system to another. Because
ftp
is so widely used, I describe some of the more commonly used
ftp
commands:
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ascii
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Set the type of file transferred to ASCII. This means that you are transferring an ASCII file from one system to another.
binary
is usually the default.
Example:
ascii
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binary
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Set the type of file transferred to binary. This means that you are transferring a binary file from one system to another. If, for instance, you want to have a directory on your UNIX system that holds applications that you copy to non-UNIX systems, then you want to use binary transfer.
Example:
binary
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cd
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Change to the specified directory on the remote host.
Example:
cd /tmp
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dir
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List the contents of a directory on the remote system to the screen or to a file on the local system, if you specify a local file name.
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get
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Copy the specified remote file to the specified local file. If you don't specify a local file name, then the remote file name will be used.
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lcd
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Change to the specified directory on the local host.
Example:
lcd /tmp
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ls
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List the contents of a directory on the remote system to the screen or to a file on the local system, if you specify a local file name.
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mget
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Copy multiple files from the remote host to the local host.
Example:
mget *.c
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put
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Copy the specified local file to the specified remote file. If you don't specify a remote file name, then the local file name will be used.
Example:
put test.c
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mput
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Copy multiple files from the local host to the remote host.
Example:
mput *.c
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bye/quit
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Close the connection to the remote host.
Example:
bye
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Other
ftp
commands are available in addition to those I have covered here. If you need more information on these commands or wish to review additional
ftp
commands, the UNIX manual pages for
ftp
are helpful.
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telnet
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Used for communication with another host using the telnet protocol. Telnet is an alternative to using
rlogin
, described later. The following example shows how to establish a telnet connection with the remote host, system2:
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Comments
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$ telnet system2
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Connected to system2.
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Telnet to system2
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AIX version 4 system2
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login:
root
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Log in as root on system2
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password:
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Enter password
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Welcome to system2. - rs6000 aix 4.3.1.0
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$
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AIX prompt on system2
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