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Full Discussion: grep for a particular field
Top Forums Shell Programming and Scripting grep for a particular field Post 302534947 by dbashyam on Wednesday 29th of June 2011 08:12:53 AM
Old 06-29-2011
grep for a particular field
Hi All,

I have the following in a text file

Code:
#---- Set Silent License Acceptance
#---- Accept license agreement: remove # sign
#----                 example: LICENSE_ACCEPTED=true
#---- if the LICENSE_ACCEPTED is anything other then true the installation will exit
#----        no log will be produced, no indication of failure provided
#----
#---- By removing the # sign before #LICENSE_ACCEPTED=false and changing false to true
#---- you have signified acceptance of the Netcool/Impact 5.1.1 license agreement
#LICENSE_ACCEPTED=false

I want to grep only the LICENSE_ACCEPTED=false alone. The LICENSE_ACCEPTED=false is present at the bottom I don't want to grep anything in the middle and this LICENSE_ACCEPTED=false has a '#' symbol also. So, how to grep this part alone

I am actually grepping this field and making false to true by using the following command but the current command greps all the LICENSE_ACCEPTED

Code:
echo "`grep -q LICENSE_ACCEPTED $NCHOME/installSilent_response.txt && sed 's#LICENSE_ACCEPTED=[^ ]*#LICENSE_ACCEPTED='${RESPONSE}#g'' $NCHOME/installSilent_response.txt || sed '$ a LICENSE_ACCEPTED='${RESPONSE}' $NCHOME/installSilent_response.txt'`" >> $NCHOME/installSilent_response_hp.txt

So,

1. how to remove the # from the legal unique LICENSE_ACCEPTED
2. And then just grep the unique LICENSE_ACCEPTED

Thanks for any help
Dinesh
 

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LEARN ABOUT REDHAT

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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