UUENCODE(5)             GENIX Programmer's Manual             UUENCODE(5)



      NAME
           uuencode - format of an encoded uuencode file

      DESCRIPTION
           Files output by uuencode(1) consist of a header line, followed by  a
           number  of  body lines, and a trailer line.  Uudecode(1) will ignore
           any lines preceding the header  or  following  the  trailer.   Lines
           preceding a header must not, of course, look like a header.

           The header line is distinguished by having the  first  6  characters
           "begin ".   The  word  begin is followed by a mode (in octal), and a
           string which names the remote file.  A  space  separates  the  three
           items in the header line.

           The body consists of a number of lines, each at most  62  characters
           long (including the trailing newline).  These consist of a character
           count, followed by encoded characters, followed by a  newline.   The
           character  count  is  a single printing character, and represents an
           integer, the number of bytes the rest of the line represents.   Such
           integers  are always in the range from 0 to 63 and can be determined
           by subtracting the character space (octal 40) from the character.

           Groups of 3 bytes are stored in 4 characters, 6 bits per  character.
           All are offset by a space to make the characters printing.  The last
           line may be shorter than the normal 45 bytes.  If the size is not  a
           multiple of 3, this fact can be determined by the value of the count
           on the last line.  Extra garbage will be included to make the  char-
           acter  count a multiple of 4.  The body is terminated by a line with
           a count of zero.  This line consists of one ASCII space.

           The trailer line consists of "end" on a line by itself.

      SEE ALSO
           uuencode(1), uudecode(1), uusend(1), uucp(1), mail(1)





















      Printed 11/16/83                                                        1