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UUdecode
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NAME
uuencode, uudecode - encode/decode a binary file for
transmission via mail
SYNTAX
uuencode <infilename >outfilename filename
uudecode filename.uu
DESCRIPTION
The uuencode and uudecode commands are used to send a binary
file via uucp (or other) mail.
The uuencode command takes the named source file (default
standard input) and produces an encoded version on the stan-
dard output. The encoding uses only printing ASCII charac-
ters, and includes the mode of the file and the remotedest
for recreation on the remote system.
The uudecode command reads an encoded file, strips off any
leading and trailing lines added by mailers, and recreates
the original file with the specified mode and name.
The intent is that all mail to the user ``decode'' should be
filtered through the uudecode program. This way the file is
created automatically without human intervention. This is
possible on the uucp network by either using sendmail or by
making rmail be a link to Mail instead of mail. In each
case, an alias must be created in a master file to get the
automatic invocation of uudecode.
If these facilities are not available, the file can be sent
to a user on the remote machine who can uudecode it manu-
ally.
The encode file has an ordinary text form and can be edited
by any text editor to change the mode or remote name.
RESTRICTIONS
The file is expanded by 35% (3 bytes become 4 plus control
information) causing it to take longer to transmit.
The user on the remote system who is invoking uudecode
(often uucp) must have write permission on the specified
file.