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Top Forums Shell Programming and Scripting Paste two file side by side together based on specific pattern match problem Post 302381424 by Scott on Friday 18th of December 2009 06:10:42 AM
Old 12-18-2009
Hi Patrick.

Quote:
Originally Posted by patrick87
Hi scottn,
Thanks for your reminding Smilie
Can I ask you what is the meaning of "?" and "A[$1]:$0"?

It's really just shorthand for an if-then-else statement. Search for "The Conditional Statement"
here


---------- Post updated at 05:24 AM ---------- Previous update was at 05:17 AM ----------
Quote:
Originally Posted by patrick87
Can I ask you how we can determine to use awk, nawk, or gawk?
I use awk because it is generally a copy of or link to nawk or gawk, so I don't need to know or think about which one is installed.

i.e. On AIX it's a link to nawk, on Linux awk and nawk are probably both linked to gawk.

The only exception is on Solaris, where you should use nawk, /usr/xpg4/bin/awk or gawk (if it's available) instead of /usr/bin/awk.

_ is just a cool name to use for a variable :-)
 

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STEREO3D(1)						      General Commands Manual						       STEREO3D(1)

NAME
stereo3d - render a Raster3D scene as a side-by-side stereo pair SYNOPSIS
stereo3d [options] [-png [outfile.png ]] < infile.r3d > outfile.png stereo3d [options] -tiff [outfile.tiff] < infile.r3d > outfile.tiff stereo3d is a shell script that renders a single Raster3D input file as a side-by-side stereo pair. stereo3d uses the Raster3D utilities normal3d and render, and the ImageMagick image processing package. Intermediate scratch files are created in directory TMPDIR, if defined, otherwise in /usr/tmp. The right eye and left eye views are separately rendered, optionally given black borders, and merged to form a single side-by-side stereo pair. Input is from stdin, output is to stdout unless a filename is given as an argument to the -png or -tiff options. EXAMPLES
If the following line would render a single image: render -tiff single.tiff < input.r3d then the following line would render the same scene as a stereo pair instead: stereo3d -tiff stereo.tiff < input.r3d OPTIONS
The options below are specific to stereo3d. All other options, e.g. -labels or -gamma 1.2 are passed through to the render program. -angsep By default the stereo effect is generated by a shear operation. The -angsep option creates stereo by using angular separation instead. Neither option is perfect: the default handles shadows badly, and the -angsep option blurs specular highlights. -border By default the left and right images are placed next to each other with no intervening space and no frame around them. The -border option requests a 4 pixel wide black border separating and surrounding the component images. SOURCE
web URL: http://www.bmsc.washington.edu/raster3d/raster3d.html contact: Ethan A Merritt University of Washington, Seattle WA 98195 merritt@u.washington.edu SEE ALSO
normal3d(l), render(l), raster3d(l) AUTHORS
Ethan A Merritt. Raster3D 19 Dec 2010 STEREO3D(1)
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