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Full Discussion: Print 4th line back from regexp
Top Forums Shell Programming and Scripting Print 4th line back from regexp Post 302874607 by senormarquez on Friday 15th of November 2013 04:31:56 PM
Old 11-15-2013
Print 4th line back from regexp
I'm looking for a way to print the 4th line back from a regular expression. Kind of like the below but it has to be the 4th line before the regexp.
  • Print the line immediately before regexp, but not the line containing the regexp.
Code:
sed -n '/regexp/{g;1!p;};h'

here is an example of logs(i chopped the logs bc each line is too long)
Code:
01:59:09,260 DEBUG SOAP REQUEST: <SOAP-ENV:..<ns1:mdn>NPANXX<
/ns1:mdn>
01:59:09,260 INFO  [com
01:59:09,273 INFO  [org.apache
01:59:09,283 INFO  [stdout]
01:59:29,780 WARNING SendProv has thrown exception

I'm looking for "SendProv has thrown exception" and want to parse the MDN where it threw the exception.

Any ideas?
Last edited by Scott; 11-15-2013 at 05:52 PM.. Reason: Code tags for data too
 

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LEARN ABOUT CENTOS

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change your login shell

SYNOPSIS

       chsh [-s shell] [-l] [-u] [-v] [username]

DESCRIPTION

       chsh is used to change your login shell.  If a shell is not given on the command line, chsh prompts for one.

       chsh is used to change local entries only. Use ypchsh, lchsh or any other implementation for non-local entries.

OPTIONS

       -s, --shell shell
	      Specify your login shell.

       -l, --list-shells
	      Print the list of shells listed in /etc/shells and exit.

       -u, --help
	      Print a usage message and exit.

       -v, --version
	      Print version information and exit.

VALID SHELLS

       chsh  will  accept  the full pathname of any executable file on the system.  However, it will issue a warning if the shell is not listed in
       the /etc/shells file.  On the other hand, it can also be configured such that it will only accept shells listed in this	file,  unless  you
       are root.

EXIT STATUS

       Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid.

SEE ALSO

       login(1), passwd(5), shells(5)

AUTHOR

       Salvatore Valente <svalente@mit.edu>

AVAILABILITY

       The chsh command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							     July 2009								   CHSH(1)
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