uuencode - encode a binary file
uudecode - decode a file created by uuencode
uuencode [-m? [ file? name
uudecode [-o outfile? [ file?...
Uuencode and uudecode are used to transmit
binary files over transmission mediums that do not support
other than simple ASCII data.
Uuencode reads file (or by default the
standard input) and writes an encoded version to the
standard output. The encoding uses only printing ASCII
characters and includes the mode of the file and the operand
name for use by uudecode. If name is
/dev/stdout the result will be written to standard
output. By default the standard UU encoding format will be
used. If the option -m is given on the command line
base64 encoding is used instead.
Uudecode transforms uuencoded files (or by
default, the standard input) into the original form. The
resulting file is named name (or outfile if
the -o option is given) and will have the mode of the
original file except that setuid and execute bits are not
retained. If outfile or name is /dev/stdout
the result will be written to standard output.
Uudecode ignores any leading and trailing lines. The
program can automatically decide which of the both supported
encoding schemes are used.
The following example packages up a source tree, compresses
it, uuencodes it and mails it to a user on another system.
When uudecode is run on the target system, the file
``src_tree.tar.Z'' will be created which may then be
uncompressed and extracted into the original
tar cf - src_tree | compress | uuencode src_tree.tar.Z |
compress(1)?, mail(1), uucp(1)?, uuencode(5)
This implementation is compliant with
If more than one file is given to uudecode and the -o
option is given or more than one name in the encoded
files are the same the result is probably not what is
The encoded form of the file is expanded by 37% for UU
encoding and by 35% for base64 encoding (3 bytes become 4
plus control information).
The uuencode command appeared in BSD