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Full Discussion: How to print previous line of multiple pattern matched line?
Top Forums Shell Programming and Scripting How to print previous line of multiple pattern matched line? Post 302965881 by arvindshukla81 on Thursday 4th of February 2016 03:15:29 AM
Old 02-04-2016
How to print previous line of multiple pattern matched line?
Hello,

I have below format log file,
Code:
Comparing csv_converted_files/2201/9747.1012H67126.5077292103609547345.csv and csv_converted_files/22019/97447.1012H67126.5077292103609547345.csv
Comparing csv_converted_files/2559/9447.1012H67126.5077292103609547345.csv and csv_converted_files/224517/97447.1012H67126.5077292103609547345.csv
Comparing csv_converted_files/0520/7447.1012H67126.5077292103609547345.csv and csv_converted_files/22004517/97447.1012H67126.5077292103609547345.csv
Line 1508;Field 3 diff value 14.983798027 - 14.9837970734 =  9.536e-07
Comparing csv_converted_files/220151130005008/97447.101866J362.11513249717775333748.csv and csv_converted_files/220151130005009/97447.101866J362.11513249717775333748.csv
Line 1493;Field 42 diff value -260.341918945 - -260.341888428 =  -3.0517e-05
Comparing csv_converted_files/220151130005009/97447.101866J362.11513249717775333748.csv and csv_converted_files/220151130005008/97447.101866J362.11513249717775333748.csv
Line 1493;Field 42 diff value -260.341888428 - -260.341918945 =  3.0517e-05
Comparing csv_converted_files/520151130004443/24740.48537131001.16216540273753330633.csv and csv_converted_files/720151130006698/24740.48537131001.16216540273753330633.csv
Line 1295;Field 103 diff value -1.57253694534 - -1.57253658772 =  -3.5762e-07
Line 1378;Field 64 diff value 5.29786920547 - 5.29786968231 =  -4.7684e-07

I wanted to print line starting with ^Line and having diff value greater than > 10.000
Along with it previous line starting with ^Comapring string. So basically a line starting with ^Comparing can have multiple corresponding line starting with ^Line.

grep -B1 gives previous line only if single line having ^Line is present but however with multiple lines having ^Line doesn't work.

Any help appreciated and let me know if any further information is required.

Thanks,
Arvind.
Last edited by Don Cragun; 02-04-2016 at 04:53 AM.. Reason: Get rid of Italic and COLOR tags; add CODE and ICODE tags.
 

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rec2csv

REC2CSV(1)							   User Commands							REC2CSV(1)

NAME

       rec2csv - rec to csv converter

SYNOPSIS

       rec2csv [OPTIONS]... [REC_FILE]

DESCRIPTION

       Convert rec data into csv data.

       -t, --type=TYPE
	      record set to convert to csv; if this parameter is omitted then the default record set is used

       -S, --sort=FIELD
	      sort the output by the specified field.

       --help print a help message and exit.

       --version
	      show version and exit.

AUTHOR

       Written by Jose E. Marchesi.

REPORTING BUGS

       Report bugs to: bug-recutils@gnu.org
       GNU recutils home page: <http://www.gnu.org/software/recutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2010, 2011, 2012 Jose E. Marchesi.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for  rec2csv  is maintained as a Texinfo manual.  If the info and rec2csv programs are properly installed at your
       site, the command

	      info rec2csv

       should give you access to the complete manual.

rec2csv 1.4.93							   January 2012 							REC2CSV(1)
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