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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 MINIX

grep

GREP(1) 						      General Commands Manual							   GREP(1)

NAME

       grep - search a file for lines containing a given pattern

SYNOPSIS

       grep [-elnsv] pattern [file] ...

OPTIONS

       -e     -e pattern is the same as pattern

       -c     Print a count of lines matched

       -i     Ignore case

       -l     Print file names, no lines

       -n     Print line numbers

       -s     Status only, no printed output

       -v     Select lines that do not match

EXAMPLES

       grep mouse file	   # Find lines in file containing mouse

       grep [0-9] file	   # Print lines containing a digit

DESCRIPTION

       Grep  searches  one  or	more  files (by default, stdin) and selects out all the lines that match the pattern.  All the regular expressions
       accepted by ed and mined are allowed.  In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or  1
       occurrences,  and  |  can  be used between two regular expressions to mean either one of them.  Parentheses can be used for grouping.  If a
       match is found, exit status 0 is returned.  If no match is found, exit status 1 is returned.  If an error is detected,  exit  status  2	is
       returned.

SEE ALSO

       cgrep(1), fgrep(1), sed(1), awk(9).

																	   GREP(1)
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