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Top Forums Shell Programming and Scripting Compare & replace contents within a file Post 302198807 by kaustubh137 on Saturday 24th of May 2008 05:26:58 AM
Old 05-24-2008
Compare & replace contents within a file

I have 2 files

file1
Code:
1       TMQUEUE QUE1    STMW633A
100     DMADM   DOMGRPSTMW633A  STMW633A
100     GWADM   GWTGRPSTMW633A  STMW633A
100     GWADM   GWTGRPSTMW633AA STMW633A
100     GWADM   GWTGRPSTMW638A  STMW638A
100     TMSYSEVT        EVTGRPSTMW633A  STMW633A
100     TMSYSEVT        EVTGRPSTMW638A  STMW638A
100     WSL     WSLGRPSTMW633A  STMW633A
100     WSL     WSLGRPSTMW638A  STMW638A

file2
Code:
1 TMQUEUE QUE1 1
100 DMADM DOMGRPSTMW633A 1
100 GWADM GWTGRPSTMW633A 1
100 GWADM GWTGRPSTMW633AA 1
100 GWADM GWTGRPSTMW638A 1
100 TMSYSEVT EVTGRPSTMW633A 1
100 TMSYSEVT EVTGRPSTMW638A 1
100 WSL WSLGRPSTMW633A 1
100 WSL WSLGRPSTMW638A 1

First 3 columns in the files are same except the 4th one. I want to replace
1st column in file2 with the 4th column in file1 by comparing first 3 columns from both the files.

Thanks in advance

Last edited by Yogesh Sawant; 05-27-2008 at 08:12 AM.. Reason: added code tags
 

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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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