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Full Discussion: Replace a numeric values in a certain column
Top Forums UNIX for Beginners Questions & Answers Replace a numeric values in a certain column Post 303031041 by arunkumar_mca on Wednesday 20th of February 2019 10:02:38 PM
Old 02-20-2019
Replace a numeric values in a certain column
Hi All,

I am trying to replace a certain value from one place in a file . In the below file at position 35 I will have 8 I need to modify all 8 in that position to 7

I tried
Code:
awk '{gsub("8","7",$35)}1' infile > outfile  ----> not working 
sed -i 's/8/7'g' infile --- it is replacing all the values  to 7 in the file.

infile:
020000492019010369200000000000000080009999005566005852006266004961000000000000000000000000
020000492019010369200012000809990080000021005566005852006266004961004100004615004490003951
020000492019010369200021131506450080000095005566005852006266004961004301006451006763006043
020000492019010369200033383653250080000121005566005852006266004961009473007622008426007768
020000492019010369200078000082160080000021005566005852006266004961004100004615004490003951
020000492019010369200078742014720080000021005566005852006266004961004100004615004490003951
020000492019010369200078742082950080000099005566005852006266004961002196002760003833002774
020000492019010369200078742104180080000099005566005852006266004961002196002760003833002774


Expected output:

020000492019010369200000000000000070009999005566005852006266004961000000000000000000000000
020000492019010369200012000809990070000021005566005852006266004961004100004615004490003951
020000492019010369200021131506450070000095005566005852006266004961004301006451006763006043
020000492019010369200033383653250070000121005566005852006266004961009473007622008426007768
020000492019010369200078000082160070000021005566005852006266004961004100004615004490003951
020000492019010369200078742014720070000021005566005852006266004961004100004615004490003951
020000492019010369200078742082950070000099005566005852006266004961002196002760003833002774
020000492019010369200078742104180070000099005566005852006266004961002196002760003833002774

Also on a follow up if I want to replace 008 to 009 . 008 is on the same column 33-35. What should I do
Last edited by arunkumar_mca; 02-20-2019 at 11:18 PM..
 

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LEARN ABOUT MOJAVE

make_sockdfr

MAKE_SOCKDFR(8) 					      System Manager's Manual						   MAKE_SOCKDFR(8)

NAME

       make_sockdfr -  Generates frozen route file for SOCKS server

SYNOPSIS

       make_sockdfr [infile [outfile] ]

DESCRIPTION

       make_sockdfr reads in a plain-text route file for the SOCKS server and produces a frozen route file as the output.

       Both  arguments	are optional. The default for infile is /etc/sockd.route; the default for outfile is /etc/sockd.fr. You may specify infile
       while omitting outfile, but you cannot specify outfile without also speficying infile.

       The contents of the frozen route file is essentially the memory image of the parsed input file. Using the frozen route file can reduce  the
       start-up delay of the SOCKS server program since it no longer has to parse the file contents.

       When  the  SOCKS  server starts, it always looks for the frozen route file /etc/sockd.fr first. If that file is not found, it then tries to
       use the plain-text route file /etc/sockd.route. If you use frozen route file, you must remember to run make_sockdfr every  time	after  you
       modify the plain-text file or the SOCKS server will continue to use the frozen version of a previous route file.

       To find out the contents of a frozen route file, use dump_sockdfr.

FILES

       /etc/sockd.fr, /etc/sockd.route

SEE ALSO

       dump_sockdfr(8), sockd.fr(5), sockd.route(5)

AUTHOR

       Ying-Da Lee, yingda@esd.sgi.com or yingda@best.com

								    May 6, 1996 						   MAKE_SOCKDFR(8)
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