UUENCODE(1) | General Commands Manual | UUENCODE(1) |
uuencode
, uudecode
—
uuencode |
[-m ] [inputfile]
headername |
uudecode |
[-m ] [-p |
-o outputfile]
[encoded-file ...] |
uuencode
and uudecode
are used
to transmit binary files over transmission mediums that do not support other
than simple ASCII data.
The following options are available:
-m
uuencode
, the historical
uuencode algorithm is the default. For uudecode
,
by default the encoding is automatically detected.-o
outputfileuudecode
only.) Send the
decoded output data to outputfile. By default,
uudecode
uses the headername
recorded in the header of the encoded data stream.-p
uudecode
only.) Write the
decoded file to standard output instead of to a file.uuencode
reads
inputfile (or by default the standard input) and
writes an encoded version to (always) the standard output. The encoding uses
only printing ASCII characters suitable for text-only transport media. The
string headername is inserted into the output header
as the outputfile to use at
uudecode
time. The header also includes the mode
(permissions) of the file.
uudecode
transforms
uuencoded files (or by default, the standard input) into
the original form. The resulting file is named
headername as recorded in the encoded file, or as
specified by the -o
option, and will have the mode
of the original file except that setuid and execute bits are not retained.
If the -p
option is specified, or if the output file
name is given as /dev/stdout, then the data will be
written to the standard output instead of to a named file.
uudecode
ignores any leading and trailing lines.
The encoded form of the file is expanded by 35%. Every 3 bytes become 4 plus control information.
uudecode
and uuencode
utilities exits 0 on success, and >0 if an error occurs.
tar czf - src_tree | uuencode src_tree.tgz | mail user@example.com
On the other system, if the user saves the mail to the file temp, the following example creates the file src_tree.tgz and extracts it to make a copy of the original tree.
uudecode temp tar xzf src_tree.tgz
uudecode
and uuencode
utilities conform to IEEE Std 1003.1-2008
(“POSIX.1”).
uudecode
and uuencode
utilities appeared in 4.0BSD.
uudecode
with files coming from dubious
sources, always either explicitly pass the -o
option
or check the header (the first line) of the encoded file for safety. Blindly
using a headername from a hostile source can overwrite
important files.
September 6, 2014 | NetBSD 9.4 |