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32 .\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93
33 .\" $FreeBSD: src/usr.bin/uuencode/uuencode.1,v 1.9.2.9 2003/04/07 20:11:46 fanf Exp $
34 .\" $DragonFly: src/usr.bin/uuencode/uuencode.1,v 1.3 2006/02/17 19:39:14 swildner Exp $
44 .Nd encode/decode a binary file
48 .Op Fl o Ar output_file
58 .Op Fl o Ar output_file
73 utilities are used to transmit binary files over transmission mediums
74 that do not support other than simple
79 utility is synonymous with
86 utility is synonymous with
96 (or by default the standard input) and writes an encoded version
97 to the standard output, or
99 if one has been specified.
100 The encoding uses only printing
102 characters and includes the
103 mode of the file and the operand
112 files (or by default, the standard input) into the original form.
113 The resulting file is named either
115 or (depending on options passed to
118 and will have the mode of the original file except that setuid
119 and execute bits are not retained.
122 utility ignores any leading and trailing lines.
124 The following options are available for
126 .Bl -tag -width ident
128 Use the Base64 method of encoding, rather than the traditional
131 .It Fl o Ar output_file
134 instead of standard output.
137 The following options are available for
139 .Bl -tag -width ident
141 Decode more than one uuencoded file from
145 Do not overwrite files.
149 flag, decode Base64 input instead of traditional
155 .It Fl o Ar output_file
158 instead of any pathname contained in the input data.
162 and write output to standard output.
164 Decode raw (or broken) input, which is missing the initial and
165 possibly the final framing lines.
166 The input is assumed to be in the traditional
170 flag is used, or if the utility is invoked as
172 then the input is assumed to be in Base64 format.
174 Do not strip output pathname to base filename.
177 deletes any prefix ending with the last slash '/' for security
181 The following example packages up a source tree, compresses it,
182 uuencodes it and mails it to a user on another system.
185 is run on the target system, the file ``src_tree.tar.Z'' will be
186 created which may then be uncompressed and extracted into the original
189 .Bd -literal -offset indent -compact
190 tar cf \- src_tree \&| compress \&|
191 uuencode src_tree.tar.Z \&| mail sys1!sys2!user
194 The following example unpacks all uuencoded
195 files from your mailbox into your current working directory.
197 .Bd -literal -offset indent -compact
201 The following example extracts a compressed tar
202 archive from your mailbox
204 .Bd -literal -offset indent -compact
205 uudecode -o /dev/stdout < $MAIL | zcat | tar xfv -
218 utilities appeared in
221 Files encoded using the traditional algorithm are expanded by 35% (3
222 bytes become 4 plus control information).