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Full Discussion: Print combinations of alphabets in a sequence
Top Forums Shell Programming and Scripting Print combinations of alphabets in a sequence Post 302788673 by jacobs.smith on Tuesday 2nd of April 2013 10:10:34 AM
Old 04-02-2013
Print combinations of alphabets in a sequence
Hi Friends,

I have a series of alphabets like this

Code:
[CA]A[GCAT][ATG][AA]GCAA[TG]

The values inside the square brace indicate that either of them can be present at that position. And those ones without a brace, means that they are the only ones that could be printed at that location.

Now, I would like to know if there is a possibility for a script to print all possible combinations of these alphabet occurrences.

For an example sake, if I consider only the first alphabet within a square brace, the output would be

Code:
CAGAAGCAAT

The alphabets in bold indicate the first ones in the square brace. Like this way, is there a possibility to print all possible combinations?

Thanks
 

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LEARN ABOUT ULTRIX

ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)
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