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Full Discussion: sed and cut behaving differently
Top Forums Shell Programming and Scripting sed and cut behaving differently Post 302417964 by alister on Saturday 1st of May 2010 07:47:50 PM
Old 05-01-2010
A quick peek at sample.conf shows that the first byte in the lines is a null byte. It's a safe bet that what you are seeing is a sideeffect of c string functions interpreting a null byte as end of string.

For experimentation's sake, does the discrepancy persist if you substitute a 001 byte for the 000 bytes?
Code:
tr \\000 \\001 < withnull > withoutnull

If it does not, mystery solved. If it does, weird. Could that sed implementation be filtering out control characters?

Regards,
Alister
 

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LEARN ABOUT FREEBSD

gb18030

GB18030(5)						      BSD File Formats Manual							GB18030(5)

NAME

     gb18030 -- GB 18030 encoding method for Chinese text

SYNOPSIS

     ENCODING "GB18030"

DESCRIPTION

     The GB18030 encoding implements GB 18030-2000, a PRC national standard for the encoding of Chinese characters.  It is a superset of the older
     GB 2312-1980 and GBK encodings, and incorporates Unicode's Unihan Extension A completely.	It also provides code space for all Unicode 3.0
     code points.

     Multibyte characters in the GB18030 encoding can be one byte, two bytes, or four bytes long.  There are a total of over 1.5 million code
     positions.

     GB 11383-1981 (ASCII) characters are represented by single bytes in the range 0x00 to 0x7F.

     Chinese characters are represented as either two bytes or four bytes.  Characters that are represented by two bytes begin with a byte in the
     range 0x81-0xFE and end with a byte either in the range 0x40-0x7E or 0x80-0xFE.

     Characters that are represented by four bytes begin with a byte in the range 0x81-0xFE, have a second byte in the range 0x30-0x39, a third
     byte in the range 0x81-0xFE and a fourth byte in the range 0x30-0x39.

SEE ALSO

     euc(5), gb2312(5), gbk(5), utf8(5)

     Chinese National Standard GB 18030-2000: Information Technology -- Chinese ideograms coded character set for information interchange --
     Extension for the basic set, March 2000.

     The Unicode Standard, Version 3.0, The Unicode Consortium, 2000.

STANDARDS

     The GB18030 encoding is believed to be compatible with GB 18030-2000.

BSD
								  August 10, 2003							       BSD
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