Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep word after last occurance of string and display next few lines
Top Forums Shell Programming and Scripting Grep word after last occurance of string and display next few lines Post 302879441 by Don Cragun on Thursday 12th of December 2013 01:08:01 PM
Old 12-12-2013
Quote:
Originally Posted by MadeInGermany
In your first post you wanted a "before" line (that my awk script stored in the b variable) and 2 "after" lines.
Without "before" line and 3 "after" lines:
Code:
awk 'cnt&&cnt-- {s=s RS $0} /ERROR|WARNING/ {if (cnt==0) s=s (s?RS:s) $0; cnt=3} /Starting/ {s=""; cnt=0} END {print s}' errorlog

Actually, after throwing away everything in the sample input before the last line containing "Starting", the command:
Code:
grep -E -A3 -in 'WARNING|ERROR'

(the original command line nes provided [except it was missing the -E]) on the remaining text would produce:
Code:
3:WARNING
4-line8.8
5-line8.9
6-line9
7:ERROR
8-line10
9-line11

and accept ERROR and WARNING in mixed case (not just in all caps). You and I could duplicate this in awk, but it is complex enough that I didn't want to take the time to reinvent what grep already does so well. I thought we just needed to extract the final lines from errlog and feed them into the grep command nes had already supplied.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

grep a word and display its column

Hi, I need idea about this, say I have this line: 05 21 * * 0,6 /user/clean.desktop.sh > /tmp/desktop_rpt 2>&1 I would need to grep the word desktop and display the /user/clean.desktop.sh and not the whole line. And if I have some more lines say, 05 21 * * 0,6 /user/clean.desktop.sh >... (1 Reply)
Discussion started by: Orbix
1 Replies

2. UNIX for Dummies Questions & Answers

how to grep for a word and display only the word

Hi, When we "grep" for a word in a file, it returns the lines containing the word that we searched for. Is there a way to display only the words and not the entire line containing them. Thanks Ananth (6 Replies)
Discussion started by: ananthmm
6 Replies

3. Shell Programming and Scripting

How to Grep for particular word and display..

Hi Guru's.... I've one log file in all my systems which writes the backup information.. I'have written a command like this: ssh -l ora${sid} ${primaryhost} "tail -50 /oracle/$ORACLE_SID/newbackup/END_BACKUP.log" |grep 'insert' |tail -1| awk '{print $7}' We have nearly 50 systems in our... (2 Replies)
Discussion started by: suri.tyson
2 Replies

4. Shell Programming and Scripting

How can I match lines with just one occurance of a string in awk?

Hi, I'm trying to match records using awk which contain only one occurance of my string, I know how to match one or more (+) but matching only one is eluding me without developing some convoluted bit of code. I was hoping there would be some simple pattern matching thing similar to '+' but... (9 Replies)
Discussion started by: jonathanm
9 Replies

5. Shell Programming and Scripting

grep display word only

Folks, is it possible to display only words with grep (or any built-in ultility)? I have more than 1 pattern to search, say apple & orange The text goes like this: So I need to display all the words starting with apple or orange The output should be: Any idea? (7 Replies)
Discussion started by: bsddaemon
7 Replies

6. UNIX for Dummies Questions & Answers

how to grep the word and display only the second word from it

hi, consider the below line in a text file, 'Y',getdate(),'N','V',NULL ..... 'N',getdate(),'Y','D',NULL ..... 'Y','N','Y',getdate(),'Y','D',NULL .... as u see above, i want only the second word after the getdate() word... getdate() will not come 2nd word alwys it may be any position but i... (11 Replies)
Discussion started by: prsam
11 Replies

7. Shell Programming and Scripting

Parse a file to display lines containing a word

Hi! I'm trying to create a shell script to parse a file which might have multiple lines matching a pattern (i.e. containing some word). I need to return all lines matching the pattern, but stripping the contents of that line until the pattern is matched For example, if my input file was ... (4 Replies)
Discussion started by: orno
4 Replies

8. Shell Programming and Scripting

Search a String and display only word.

Hello Gurus, Apologies if this Q has been repeated but i was not able to find it :( I have an input file: ------------------------------- Replace DB.Employee as select column1 column2 from DB_T.Emp and DB.Test and DB.Dept and DB_T.Ter; ------------------------ (4 Replies)
Discussion started by: indrajit_u
4 Replies

9. Shell Programming and Scripting

Multi line document to single lines based on occurance of string

Hi Guys, I am new to awk and sed, i am working multiline document, i want to make make that document into SINGLE lines based on occurace of string "dwh". here's the sample of my problem.. dwh123 2563 4562 4236 1236 78956 12394 4552 dwh192 2656 46536 231326 65652 6565 23262 16625623... (5 Replies)
Discussion started by: victor369
5 Replies

10. Shell Programming and Scripting

How to grep for a word and display last transection?

Hi, When we "grep" for a word in a file, it returns the last lines containing the word that we searched for. Is there a way to display last line to grep. Thanks Ex log. Ex. logname.log 2015-07-29 06:43:07.023|BETA |2015-07-29... (5 Replies)
Discussion started by: ooilinlove
5 Replies

LEARN ABOUT PHP

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
All times are GMT -4. The time now is 12:00 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy