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Full Discussion: awk split
Top Forums UNIX for Dummies Questions & Answers awk split Post 302546940 by alister on Friday 12th of August 2011 02:26:52 PM
Old 08-12-2011
You can't expect characters that are used to split a string to be part of the result. If you split "1,2,3,4" on the comma, by definition the comma is not an allowed member of a field. Same goes with a bracket expression such as "[ACGT]"; splitting on such an expression forbids A, C, G, and T from occurring in a field.

Assuming I understood what were trying to do, the semicolons in your bracket expressions are incorrect. Characters in a bracket expression should not be delimited. To split on the four letters "A", "C", "G", and "T", "[ACGT]" is all that's needed. Adding those semicolons will cause splitting on semicolons as well.

Looking at your data:
Code:
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/29_426ACGTGCTATGCGG

If you just want to print the highlighted base sequence, and if its always preceded by the final number in the line, the following will do:
Code:
sed 's/.*[[:digit:]]//'

Or if the base sequence always begins at the 4th character past the final underscore:
Code:
sed 's/.*_...//'

Regards,
Alister
Last edited by alister; 08-12-2011 at 03:33 PM..
This User Gave Thanks to alister For This Post:
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LEARN ABOUT DEBIAN

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.
	      Please notice this option isn't related to the terminal length as in a "80 culums terminal".

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do right to left (RTL) layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter and A4. Default is A4.

       Postscript points
	      Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch.

       --bottom-margin=bm
	      Set bottom margin. Default is 36 postscript points.

       --top-margin=tm
	      Set top margin. Default is 36 postscript points.

       --left-margin=lm
	      Set left margin. Default is 36 postscript points.

       --right-margin=rm
	      Set right margin. Default is 36 postscript points.

       --gutter-width=gw
	      Set gutter width. Default is 40 postscript points.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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