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Top Forums Shell Programming and Scripting search for an expression in a file and print the 3 lines above it Post 302419328 by Ygor on Friday 7th of May 2010 12:07:30 AM
Old 05-07-2010
Try...
Code:
nawk 'NR%4==0&&$0!~s{for(c=b+1;c>1;c--)print r[(NR-c+1)%b]}{r[NR%b]=$0}' b=3 s="OK" file1

 

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img-xbm(3tk)															      img-xbm(3tk)

NAME
img-xbm - Img, X Windows Bitmap Format (xbm) SYNOPSIS
package require Tk package require img::xbm ?1.3? image create photo ?name? ?options? DESCRIPTION
The package img::xbm is a sub-package of Img. It can be loaded as a part of the complete Img support, via package require Img, or on its own, via package require img::xbm. Like all packages of Img it does not provide new commands, but extends the existing Tk command image so that it supports files containing raster images in the X Windows Bitmap Format (xbm). More specifically img::xbm extends Tk's photo image type. The name of the new format handler is xbm. This handler does not provide additional configuration options. All of the above means that in a call like image create photo ?name? ?options? [1] Image data in xbm format (options -data and -file) is detected automatically. [2] The format name xbm is recognized by the option -format. SEE ALSO
img-bmp, img-gif, img-ico, img-intro, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-sgi, img-sun, img-tga, img-tiff, img- window, img-xbm, img-xpm KEYWORDS
image handling, tk, xbm COPYRIGHT
Copyright (c) 1995-2003 Jan Nijtmans <nijtmans@users.sourceforge.com> Img 1.3 img-xbm(3tk)
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