delete lines.. Post: 22032

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LEARN ABOUT OSX

utf8

UTF8(5) 						      BSD File Formats Manual							   UTF8(5)

NAME

     utf8 -- UTF-8, a transformation format of ISO 10646

SYNOPSIS

     ENCODING "UTF-8"

DESCRIPTION

     The UTF-8 encoding represents UCS-4 characters as a sequence of octets, using between 1 and 6 for each character.	It is backwards compatible
     with ASCII, so 0x00-0x7f refer to the ASCII character set.  The multibyte encoding of non-ASCII characters consist entirely of bytes whose
     high order bit is set.  The actual encoding is represented by the following table:

     [0x00000000 - 0x0000007f] [00000000.0bbbbbbb] -> 0bbbbbbb
     [0x00000080 - 0x000007ff] [00000bbb.bbbbbbbb] -> 110bbbbb, 10bbbbbb
     [0x00000800 - 0x0000ffff] [bbbbbbbb.bbbbbbbb] ->
	     1110bbbb, 10bbbbbb, 10bbbbbb
     [0x00010000 - 0x001fffff] [00000000.000bbbbb.bbbbbbbb.bbbbbbbb] ->
	     11110bbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
     [0x00200000 - 0x03ffffff] [000000bb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
	     111110bb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
     [0x04000000 - 0x7fffffff] [0bbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
	     1111110b, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb

     If more than a single representation of a value exists (for example, 0x00; 0xC0 0x80; 0xE0 0x80 0x80) the shortest representation is always
     used.  Longer ones are detected as an error as they pose a potential security risk, and destroy the 1:1 character:octet sequence mapping.

SEE ALSO

     euc(5)

     Rob Pike and Ken Thompson, "Hello World", Proceedings of the Winter 1993 USENIX Technical Conference, USENIX Association, January 1993.

     F. Yergeau, UTF-8, a transformation format of ISO 10646, January 1998, RFC 2279.

     The Unicode Standard, Version 3.0, The Unicode Consortium, 2000, as amended by the Unicode Standard Annex #27: Unicode 3.1 and by the Unicode
     Standard Annex #28: Unicode 3.2.

STANDARDS

     The utf8 encoding is compatible with RFC 2279 and Unicode 3.2.

BSD
								   April 7, 2004							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to delete first 5 lines and last five lines in all text files

Discussion started by: ragavendran31

2. Shell Programming and Scripting

Grep and delete lines except the lines with strings

Discussion started by: vj8436

3. Shell Programming and Scripting

How to delete lines in a file that have duplicates or derive the lines that aper once

Discussion started by: necroman08

4. Shell Programming and Scripting

sed problem - delete all lines until a match on 2 lines

Discussion started by: plelie2