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Full Discussion: Search and replace with a sliding window
Top Forums UNIX for Dummies Questions & Answers Search and replace with a sliding window Post 302907281 by Fahmida on Friday 27th of June 2014 05:29:45 AM
Old 06-27-2014
Search and replace with a sliding window
Hi Unix Gurus,

I have a file with data like:
Code:

>header_1
TCCCCGA
>header_2
CCAATTGGGTA

The data to work with starts from the next line after '>header_xx'.
(1)
I want to search the three letter patterns 'CHH' or 'DDG' and replace C and G by exclamation ! so that CHH becomes !HH and DDG becomes DD!.
where: H = any letter but not G (example CHH = CAA, CAT, CTT etc) and D = any letter but not C (example DGG = ATG, AAG etc)
(2)Form a 3 letter window and slide 1 letter at a time; check for the patten described above until finish replacing.
Example output:
Code:
>header_1
T!!CCGA
>header_2
!!AATT!!!TA

Thanks a lot for your help.
 

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LEARN ABOUT DEBIAN

mdbfontsize

mdbFontSize(5)							 The m17n Library						    mdbFontSize(5)

NAME

       mdbFontSize - Font Size

DESCRIPTION

       In some case, a font contains incorrect information about its size (typically in the case of a hacked TrueType font), which results in a
       bad text layout when such a font is used in combination with the other fonts. To overcome this problem, the m17n library loads information
       about font-size adjustment from the m17n database by the tags <font, resize>. The data is loaded as a plist of this format.

       FONT-SIZE-ADJUSTMENT ::= PER-FONT *

       PER-FONT ::= '(' FONT-SPEC ADJUST-RATIO ')'

       FONT-SPEC ::=
	   '(' [ FOUNDRY FAMILY
	      [ WEIGHT [ STYLE [ STRETCH [ ADSTYLE ]]]]]
	    REGISTRY ')'

       ADJUST-RATIO ::= INTEGER

       FONT-SPEC is to specify properties of a font. FOUNDRY to REGISTRY are symbols corresponding to Mfoundry to Mregistry property of a font.
       See m17nFont for the meaning of each property.

       ADJUST-RATIO is an integer number specifying by percentage how much the font-size must be adjusted. For instance, this PER-FONT:

	   ((devanagari-cdac) 150)

       instructs the font handler of the m17n library to open a font of 1.5 times bigger than a requested size on opening a font whose registry is
       'devanagari-cdac'.

COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
       <http://www.gnu.org/licenses/fdl.html>.

Version 1.6.2							    12 Jan 2011 						    mdbFontSize(5)
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