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Full Discussion: Selected lines from a file based on another file
Top Forums Shell Programming and Scripting Selected lines from a file based on another file Post 302732725 by Homa on Monday 19th of November 2012 05:10:27 AM
Old 11-19-2012
Selected lines from a file based on another file
Hello,

I am using Awk in Ubuntu 12.04

First file: I have a file like this:
Code:
SNP1  1  198.2   
SNP2  1  124.5
SNP3  1  124.4
.
.
.

Second file: I have another file like this:
Code:
SNP2
SNP5
SNP10
.
.
.

I want to create a third file like my first file but keeping ONLY the SNPs that exist in the second file using Awk.
For example like an output:
Code:
SNP2 1 124.5
SNP5 1 433.5
SNP10 1 454.2

Thank you very much in advance.
Last edited by Franklin52; 11-19-2012 at 07:55 AM.. Reason: Please use code tags for data and code samples
 

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LEARN ABOUT V7

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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