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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
59 are used to transmit binary files over transmission mediums
60 that do not support other than simple
67 (or by default the standard input) and writes an encoded version
68 to the standard output, or
70 if one has been specified.
71 The encoding uses only printing
73 characters and includes the
74 mode of the file and the operand
82 files (or by default, the standard input) into the original form.
83 The resulting file is named either
85 or (depending on options passed to
88 and will have the mode of the original file except that setuid
89 and execute bits are not retained.
91 ignores any leading and trailing lines.
93 The following options are available:
98 Use the Base64 method of encoding, rather than the traditional
101 .It Fl o Ar output_file
104 instead of standard output.
108 .Bl -tag -width ident
110 Decode more than one uuencode'd file from
114 Do not overwrite files.
115 .It Fl o Ar output_file
123 and write output to standard output.
125 Do not strip output pathname to base filename.
128 deletes any prefix ending with the last slash '/' for security
132 The following example packages up a source tree, compresses it,
133 uuencodes it and mails it to a user on another system.
136 is run on the target system, the file ``src_tree.tar.Z'' will be
137 created which may then be uncompressed and extracted into the original
140 .Bd -literal -offset indent -compact
141 tar cf \- src_tree \&| compress \&|
142 uuencode src_tree.tar.Z \&| mail sys1!sys2!user
145 The following example unpack all uuencode'd
146 files from your mailbox into your current working directory.
148 .Bd -literal -offset indent -compact
152 The following example extract a compress'ed tar
153 archive from your mailbox
155 .Bd -literal -offset indent -compact
156 uudecode -o /dev/stdout < $MAIL | zcat | tar xfv -
165 The encoded form of the file is expanded by 35% (3 bytes become 4 plus
166 control information).
172 utilities appeared in