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Full Discussion: grep from multiple lines in several gz files
Top Forums Shell Programming and Scripting grep from multiple lines in several gz files Post 302571573 by mandhan on Monday 7th of November 2011 06:57:36 PM
Old 11-07-2011
grep from multiple lines in several gz files
Hello all,

I have been struggling to get grep work to my requirements. Basically I have to filter out patterns spread across multiple lines over hundreds of .gz files in a folder. And the output needs to be piped to a file.

Here is the example:
folder name: logs
files in this folder: log1.gz, log2.gz, .........,log400.gz
Each of these gz files contain various log files with separate transaction ids.
Here is a dummy example of a log file:

......
<transactionId1> [ignore this random string] ignore this line
<transactionId1> [ignore this random string] carrier: ER
<transactionId1> [ignore this random string] ignore this line
<transactionId1> [ignore this random string] ignore this line
<transactionId1> [ignore this random string] ticket number:
1234567890
<transactionId1> [ignore this random string] ignore this line
......

So when I run the script from the 'logs' folder, I want the output in this format:
transactionId1 ER 1234567890
transactionId2 RF 4566822347
transactionId3 FG 5673456834
......

Please note that in the example log above, the ticket number is actually on the next line. I have tried making this work with sed but failed. I would be glad to be advised by all you experts out there.

Many thanks in advance.

Regards,
Mandhan
 

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LEARN ABOUT XFREE86

sdiff

SDIFF(1)							   User Commands							  SDIFF(1)

NAME

       sdiff - side-by-side merge of file differences

SYNOPSIS

       sdiff [OPTION]... FILE1 FILE2

DESCRIPTION

       Side-by-side merge of differences between FILE1 and FILE2.

       Mandatory arguments to long options are mandatory for short options too.

       -o, --output=FILE
	      operate interactively, sending output to FILE

       -i, --ignore-case
	      consider upper- and lower-case to be the same

       -E, --ignore-tab-expansion
	      ignore changes due to tab expansion

       -Z, --ignore-trailing-space
	      ignore white space at line end

       -b, --ignore-space-change
	      ignore changes in the amount of white space

       -W, --ignore-all-space
	      ignore all white space

       -B, --ignore-blank-lines
	      ignore changes whose lines are all blank

       -I, --ignore-matching-lines=RE
	      ignore changes all whose lines match RE

       --strip-trailing-cr
	      strip trailing carriage return on input

       -a, --text
	      treat all files as text

       -w, --width=NUM
	      output at most NUM (default 130) print columns

       -l, --left-column
	      output only the left column of common lines

       -s, --suppress-common-lines
	      do not output common lines

       -t, --expand-tabs
	      expand tabs to spaces in output

       --tabsize=NUM
	      tab stops at every NUM (default 8) print columns

       -d, --minimal
	      try hard to find a smaller set of changes

       -H, --speed-large-files
	      assume large files, many scattered small changes

       --diff-program=PROGRAM
	      use PROGRAM to compare files

       --help display this help and exit

       -v, --version
	      output version information and exit

       If a FILE is '-', read standard input.  Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.

AUTHOR

       Written by Thomas Lord.

REPORTING BUGS

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

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  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

       cmp(1), diff(1), diff3(1)

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

	      info sdiff

       should give you access to the complete manual.

diffutils 3.6							     May 2017								  SDIFF(1)
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