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32 .\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93
41 .Nd encode/decode a binary file
45 .Op Fl o Ar output_file
60 utilities are used to transmit binary files over transmission mediums
61 that do not support other than simple
69 (or by default the standard input) and writes an encoded version
70 to the standard output, or
72 if one has been specified.
73 The encoding uses only printing
75 characters and includes the
76 mode of the file and the operand
85 files (or by default, the standard input) into the original form.
86 The resulting file is named either
88 or (depending on options passed to
91 and will have the mode of the original file except that setuid
92 and execute bits are not retained.
95 utility ignores any leading and trailing lines.
97 The following options are available for
101 Use the Base64 method of encoding, rather than the traditional
104 .It Fl o Ar output_file
107 instead of standard output.
110 The following options are available for
112 .Bl -tag -width ident
114 Decode more than one uuencode'd file from
118 Do not overwrite files.
119 .It Fl o Ar output_file
122 instead of any pathname contained in the input data.
126 and write output to standard output.
128 Do not strip output pathname to base filename.
131 deletes any prefix ending with the last slash '/' for security
135 The following example packages up a source tree, compresses it,
136 uuencodes it and mails it to a user on another system.
139 is run on the target system, the file ``src_tree.tar.Z'' will be
140 created which may then be uncompressed and extracted into the original
143 .Bd -literal -offset indent -compact
144 tar cf \- src_tree \&| compress \&|
145 uuencode src_tree.tar.Z \&| mail sys1!sys2!user
148 The following example unpack all uuencode'd
149 files from your mailbox into your current working directory.
151 .Bd -literal -offset indent -compact
155 The following example extract a compress'ed tar
156 archive from your mailbox
158 .Bd -literal -offset indent -compact
159 uudecode -o /dev/stdout < $MAIL | zcat | tar xfv -
168 Files encoded using the traditional algorithm are expanded by 35% (3
169 bytes become 4 plus control information).
175 utilities appeared in