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32 .\" @(#)tftp.1 8.2 (Berkeley) 4/18/94
33 .\"
34 .Dd April 18, 1994
35 .Dt TFTP 1
36 .Os BSD 4.3
37 .Sh NAME
38 .Nm tftp
39 .Nd trivial file transfer program
40 .Sh SYNOPSIS
41 .Nm tftp
42 .Op Ar host
43 .Sh DESCRIPTION
44 .Nm Tftp
45 is the user interface to the Internet
46 .Tn TFTP
47 (Trivial File Transfer Protocol),
48 which allows users to transfer files to and from a remote machine.
49 The remote
50 .Ar host
51 may be specified on the command line, in which case
52 .Nm tftp
53 uses
54 .Ar host
55 as the default host for future transfers (see the
56 .Cm connect
57 command below).
58 .Sh COMMANDS
59 Once
60 .Nm tftp
61 is running, it issues the prompt
62 .LI tftp>
63 and recognizes the following commands:
64 .Pp
65 .Bl -tag -width verbose -compact
66 .It Cm \&? Ar command-name ...
67 Print help information.
68 .Pp
69 .It Cm ascii
70 Shorthand for "mode ascii"
71 .Pp
72 .It Cm binary
73 Shorthand for "mode binary"
74 .Pp
75 .It Cm connect Ar host-name Op Ar port
76 Set the
77 .Ar host
78 (and optionally
79 .Ar port )
80 for transfers.
81 Note that the
82 .Tn TFTP
83 protocol, unlike the
84 .Tn FTP
85 protocol,
86 does not maintain connections between transfers; thus, the
87 .Cm connect
88 command does not actually create a connection,
89 but merely remembers what host is to be used for transfers.
90 You do not have to use the
91 .Cm connect
92 command; the remote host can be specified as part of the
93 .Cm get
94 or
95 .Cm put
96 commands.
97 .Pp
98 .It Cm get Ar filename
99 .It Cm get Ar remotename localname
100 .It Cm get Ar file1 file2 ... fileN
101 Get a file or set of files from the specified
102 .Ar sources .
103 .Ar Source
104 can be in one of two forms:
105 a filename on the remote host, if the host has already been specified,
106 or a string of the form
107 .Ar hosts:filename
108 to specify both a host and filename at the same time.
109 If the latter form is used,
110 the last hostname specified becomes the default for future transfers.
111 .Pp
112 .It Cm mode Ar transfer-mode
113 Set the mode for transfers;
114 .Ar transfer-mode
115 may be one of
116 .Em ascii
117 or
118 .Em binary .
119 The default is
120 .Em ascii .
121 .Pp
122 .It Cm put Ar file
123 .It Cm put Ar localfile remotefile
124 .It Cm put Ar file1 file2 ... fileN remote-directory
125 Put a file or set of files to the specified
126 remote file or directory.
127 The destination
128 can be in one of two forms:
129 a filename on the remote host, if the host has already been specified,
130 or a string of the form
131 .Ar hosts:filename
132 to specify both a host and filename at the same time.
133 If the latter form is used,
134 the hostname specified becomes the default for future transfers.
135 If the remote-directory form is used, the remote host is
136 assumed to be a
137 .Tn UNIX
138 machine.
139 .Pp
140 .It Cm quit
141 Exit
142 .Nm tftp .
143 An end of file also exits.
144 .Pp
145 .It Cm rexmt Ar retransmission-timeout
146 Set the per-packet retransmission timeout, in seconds.
147 .Pp
148 .It Cm status
149 Show current status.
150 .Pp
151 .It Cm timeout Ar total-transmission-timeout
152 Set the total transmission timeout, in seconds.
153 .Pp
154 .It Cm trace
155 Toggle packet tracing.
156 .Pp
157 .It Cm verbose
158 Toggle verbose mode.
159 .El
160 .Sh BUGS
161 .Pp
162 Because there is no user-login or validation within
163 the
164 .Tn TFTP
165 protocol, the remote site will probably have some
166 sort of file-access restrictions in place. The
167 exact methods are specific to each site and therefore
168 difficult to document here.
169 .Sh HISTORY
170 The
171 .Nm
172 command appeared in
173 .Bx 4.3 .