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UUENCODE(1) BSD General Commands Manual UUENCODE(1)
uuencode, uudecode -- encode/decode a binary file
uuencode [-m] [inputfile] outputname
uudecode [-m | -p] [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 Use base64 encoding.
uuencode reads inputfile (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 outputname for use by uudecode.
uudecode transforms uuencoded files (or by default, the standard input) into the original
form. The resulting file is named outputname as recorded in the encoded file, and will have
the mode of the original file except that setuid and execute bits are not retained; if the
-p option is specified, the data will be written to the standard output instead. uudecode
ignores any leading and trailing lines.
The uudecode and uuencode utilities exits 0 on success, and >0 if an error occurs.
The following example packages up a source tree, compresses it, uuencodes it and mails it to
a user on another system.
tar czf - src_tree | uuencode src_tree.tgz | mail email@example.com
On the other system, if the user saves the mail to the file temp, the following example cre-
ates the file src_tree.tgz and extracts it to make a copy of the original tree.
tar xzf src_tree.tgz
gzip(1), mail(1), tar(1), uuencode(5)
The uudecode and uuencode utilities conform to IEEE Std 1003.2-1992 (``POSIX.2'').
The uudecode and uuencode utilities appeared in 4.0BSD.
The encoded form of the file is expanded by 35% (3 bytes become 4 plus control information).
BSD November 30, 2008 BSD
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