uuencode(1c) [ultrix man page]
uuencode(1c) uuencode(1c) Name uuencode, uudecode - encode/decode a binary file for transmission via mail Syntax uuencode [file] remotedest | mail sys1!sys2!..!decode uudecode [file] Description The and commands are used to send a binary file by uucp (or other) mail. This combination can be used over indirect mail links even when is not available. The command takes the named source file (default standard input) and produces an encoded version on the standard output. The encoding uses only printing ASCII characters, and includes the mode of the file and the remotedest for recreation on the remote system. The 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 program. This way the file is created automatically without human intervention. This is possible on the uucp network by either using or by making be a link to instead of In each case, an alias must be created in a master file to get the automatic invocation of If these facilities are not available, the file can be sent to a user on the remote machine who can uudecode it manually. 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 (often must have write permission on the specified file. See Also mail(1), uucp(1c), uusend(1c), uux(1c), uuencode(5) uuencode(1c)
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uuencode(1) General Commands Manual uuencode(1) NAME
uuencode - encode a binary file uudecode - decode a file created by uuencode SYNOPSIS
uuencode [-m] [ file ] name uudecode [-o outfile] [ file ]... DESCRIPTION
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 print- ing 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 out- file 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 out- file 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. EXAMPLES
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 tree. tar cf - src_tree | compress | uuencode src_tree.tar.Z | mail sys1!sys2!user SEE ALSO
compress(1), mail(1), uucp(1), uuencode(5) STANDARDS
This implementation is compliant with P1003.2b/D11. BUGS
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 expected. 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). HISTORY
The uuencode command appeared in BSD 4.0. uuencode(1)