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Top Forums Shell Programming and Scripting Change text at a variable position Post 302732757 by KobusE on Monday 19th of November 2012 05:57:16 AM
Old 11-19-2012
Linux Change text at a variable position

Hi there script guru's

I have an input file /tmp/in.txt of which the data is seperated by a : (example of the data)
test1:zz:2000:2000:zzz
te:a:2000:3333:bbb
testabs:x:2004:3000:cccc

I would like to run a scrip (bash) changing the data after the second ":"
example
Test for the value of 2000. If the value is 2000 do
Change the 2000 on line one(after the second ":" to 5000 - but do not change the 2000 after the third Smilie
The second line's 2000 must also changed to 5000
The 3rd line must not change (value ne 2000)

The data may vary, but the only changes that must be made to the text file will be between the second and 3rd ":"

Any help would be appreciated
Thx
 

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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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