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Full Discussion: Search file containing ps results for a match "my.cnf" and then for a second match . "ok:" and
Top Forums Shell Programming and Scripting Search file containing ps results for a match "my.cnf" and then for a second match . "ok:" and Post 303029370 by bash_in_my_head on Friday 25th of January 2019 01:20:13 PM
Old 01-25-2019
Search file containing ps results for a match "my.cnf" and then for a second match . "ok:" and
I need to find two matches in the output from ps. I am searching with
Code:
ps -ef |grep mysql

for:

Code:
my.cnf

Code:
/bin/sh /usr/bin/mysqld_safe --defaults-file=/data/mysql/master/agis_core/etc/my.cnf

after this match I want to search back and match the hostname which is x number of lines back, above the match my.cnf. the line I want to grab starts with "ok:" and a hostname in brackets "[hostname]"

Code:
ok:    [hostname]

I have this grep search but dont really understand it. This grep grabs just the "ok" match but not the entire line, the remainder of this line match contains the hostname I am looking to grab:

Code:
grep -Pzo 'my.cnf(?:.*\n)*?\Kok: filename

I want to exclude all lines between, before and after the matches. I want to keep the results of both matches line match one and line match two.
Last edited by bash_in_my_head; 01-25-2019 at 02:31 PM.. Reason: clarification
 

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LEARN ABOUT PLAN9

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)
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