UUENCODE(5) UNIX Programmer's Manual UUENCODE(5) NAME uuencode - format of an encoded uuencode file DESCRIPTION Files output by _u_u_e_n_c_o_d_e(_1_C) consist of a header line, fol- lowed by a number of body lines, and a trailer line. _U_u_d_e_c_o_d_e(_1_C) 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 char- acters begin . The word _b_e_g_i_n 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 charac- ters, followed by a newline. The character count is a sin- gle 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 character 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 mail(1), uucp(1C), uudecode(1C), uuencode(1C), uusend(1C) Printed 8/1/83 1