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28 .\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93
39 .Nd encode/decode a binary file
44 .Op Fl o Ar output_file
55 .Op Fl o Ar output_file
70 utilities are used to transmit binary files over transmission mediums
71 that do not support other than simple
76 utility is synonymous with
83 utility is synonymous with
93 (or by default the standard input) and writes an encoded version
94 to the standard output, or
96 if one has been specified.
97 The encoding uses only printing
99 characters and includes the
100 mode of the file and the operand
109 files (or by default, the standard input) into the original form.
110 The resulting file is named either
112 or (depending on options passed to
115 and will have the mode of the original file except that setuid
116 and execute bits are not retained.
119 utility ignores any leading and trailing lines.
121 The following options are available for
123 .Bl -tag -width ident
125 Use the Base64 method of encoding, rather than the traditional
129 Produce raw output by excluding the initial and final framing lines.
130 .It Fl o Ar output_file
133 instead of standard output.
136 The following options are available for
138 .Bl -tag -width ident
140 Decode more than one uuencoded file from
144 Do not overwrite files.
148 flag, decode Base64 input instead of traditional
154 .It Fl o Ar output_file
157 instead of any pathname contained in the input data.
161 and write output to standard output.
163 Decode raw (or broken) input, which is missing the initial and
164 possibly the final framing lines.
165 The input is assumed to be in the traditional
169 flag is used, or if the utility is invoked as
171 then the input is assumed to be in Base64 format.
173 Do not strip output pathname to base filename.
176 deletes any prefix ending with the last slash '/' for security
180 The following example packages up a source tree, compresses it,
181 uuencodes it and mails it to a user on another system.
184 is run on the target system, the file ``src_tree.tar.Z'' will be
185 created which may then be uncompressed and extracted into the original
188 .Bd -literal -offset indent -compact
189 tar cf \- src_tree \&| compress \&|
190 uuencode src_tree.tar.Z \&| mail user@example.com
193 The following example unpacks all uuencoded
194 files from your mailbox into your current working directory.
196 .Bd -literal -offset indent -compact
200 The following example extracts a compressed tar
201 archive from your mailbox
203 .Bd -literal -offset indent -compact
204 uudecode -o /dev/stdout < $MAIL | zcat | tar xfv -
216 utilities appeared in
219 Files encoded using the traditional algorithm are expanded by 35% (3
220 bytes become 4 plus control information).