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28 .\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93
29 .\" $FreeBSD: src/usr.bin/uuencode/uuencode.1,v 1.9.2.9 2003/04/07 20:11:46 fanf Exp $
30 .\" $DragonFly: src/usr.bin/uuencode/uuencode.1,v 1.3 2006/02/17 19:39:14 swildner Exp $
40 .Nd encode/decode a binary file
44 .Op Fl o Ar output_file
54 .Op Fl o Ar output_file
69 utilities are used to transmit binary files over transmission mediums
70 that do not support other than simple
75 utility is synonymous with
82 utility is synonymous with
92 (or by default the standard input) and writes an encoded version
93 to the standard output, or
95 if one has been specified.
96 The encoding uses only printing
98 characters and includes the
99 mode of the file and the operand
108 files (or by default, the standard input) into the original form.
109 The resulting file is named either
111 or (depending on options passed to
114 and will have the mode of the original file except that setuid
115 and execute bits are not retained.
118 utility ignores any leading and trailing lines.
120 The following options are available for
122 .Bl -tag -width ident
124 Use the Base64 method of encoding, rather than the traditional
127 .It Fl o Ar output_file
130 instead of standard output.
133 The following options are available for
135 .Bl -tag -width ident
137 Decode more than one uuencoded file from
141 Do not overwrite files.
145 flag, decode Base64 input instead of traditional
151 .It Fl o Ar output_file
154 instead of any pathname contained in the input data.
158 and write output to standard output.
160 Decode raw (or broken) input, which is missing the initial and
161 possibly the final framing lines.
162 The input is assumed to be in the traditional
166 flag is used, or if the utility is invoked as
168 then the input is assumed to be in Base64 format.
170 Do not strip output pathname to base filename.
173 deletes any prefix ending with the last slash '/' for security
177 The following example packages up a source tree, compresses it,
178 uuencodes it and mails it to a user on another system.
181 is run on the target system, the file ``src_tree.tar.Z'' will be
182 created which may then be uncompressed and extracted into the original
185 .Bd -literal -offset indent -compact
186 tar cf \- src_tree \&| compress \&|
187 uuencode src_tree.tar.Z \&| mail sys1!sys2!user
190 The following example unpacks all uuencoded
191 files from your mailbox into your current working directory.
193 .Bd -literal -offset indent -compact
197 The following example extracts a compressed tar
198 archive from your mailbox
200 .Bd -literal -offset indent -compact
201 uudecode -o /dev/stdout < $MAIL | zcat | tar xfv -
214 utilities appeared in
217 Files encoded using the traditional algorithm are expanded by 35% (3
218 bytes become 4 plus control information).