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91a0f057 | 1 | .\" @(#)uuencode.format.5 6.2 (Berkeley) %G% |
7e547544 | 2 | .\" |
d03ca85b | 3 | .TH UUENCODE 5 "" |
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4 | .AT 3 |
5 | .SH NAME | |
6 | uuencode \- format of an encoded uuencode file | |
7 | .SH DESCRIPTION | |
8 | Files output by | |
8df5acc2 | 9 | .I uuencode(1C) |
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10 | consist of a header line, |
11 | followed by a number of body lines, | |
12 | and a trailer line. | |
8df5acc2 | 13 | .I Uudecode(1C) |
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14 | will ignore any lines preceding the header or |
15 | following the trailer. | |
16 | Lines preceding a header must not, of course, | |
17 | look like a header. | |
18 | .PP | |
19 | The header line is distinguished by having the first | |
20 | 6 characters \*(lqbegin\ \*(rq. | |
21 | The word | |
22 | .I begin | |
23 | is followed by a mode (in octal), | |
24 | and a string which names the remote file. | |
25 | A space separates the three items in the header line. | |
26 | .PP | |
27 | The body consists of a number of lines, each at most 62 characters | |
28 | long (including the trailing newline). | |
29 | These consist of a character count, | |
30 | followed by encoded characters, | |
31 | followed by a newline. | |
32 | The character count is a single printing character, | |
33 | and represents an integer, the number of bytes | |
34 | the rest of the line represents. | |
35 | Such integers are always in the range from 0 to 63 and can | |
36 | be determined by subtracting the character space (octal 40) | |
37 | from the character. | |
38 | .PP | |
39 | Groups of 3 bytes are stored in 4 characters, 6 bits per character. | |
40 | All are offset by a space to make the characters printing. | |
41 | The last line may be shorter than the normal 45 bytes. | |
42 | If the size is not a multiple of 3, this fact can be determined | |
43 | by the value of the count on the last line. | |
44 | Extra garbage will be included to make the character count a multiple | |
45 | of 4. | |
46 | The body is terminated by a line with a count of zero. | |
47 | This line consists of one ASCII space. | |
48 | .PP | |
49 | The trailer line consists of \*(lqend\*(rq on a line by itself. | |
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50 | .SH "SEE ALSO" |
51 | uuencode(1C), uudecode(1C), uusend(1C), uucp(1C), mail(1) |