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Full Discussion: Script to capture new lines in a file and copy it to new file
Top Forums Shell Programming and Scripting Script to capture new lines in a file and copy it to new file Post 302199770 by fara_aris on Tuesday 27th of May 2008 10:11:58 PM
Old 05-27-2008
Script to capture new lines in a file and copy it to new file
Hi All,
I have a file that gives me new line/output every 5 minutes. I need to create a script that capture new line/output besides "IN CRON_STATUS", in this case the new output is "begin ------ cron_status.sh - [started] -----------".

I want this script to capture the line starting from "begin ------ cron_status.sh - [started] -----------" until it reads "IN CRON_STATUS" again. If the script notice the "IN CRON_STATUS", it will stop capturing and direct the output to a different file name and rename it to the original name but with timestamp.

Sample;
---------05/21/08-05:00:00-------- IN CRON_STATUS -----------------------------------
---------05/21/08-05:00:00-------- IN CRON_STATUS -----------------------------------
---------05/21/08-05:05:00-------- IN CRON_STATUS -----------------------------------
---------05/21/08-05:05:00-------- IN CRON_STATUS -----------------------------------
 ---------05/21/08-05:15:00-------- IN CRON_STATUS -----------------------------------
--------------------------------------- begin ------ cron_status.sh - [started] -----------
- Message Started found in /RCEBTM_appli/RCEBMA/mbox/hubftpa
- Starting Tuxedo
---------05/21/08-05:15:00-------- IN CRON_STATUS -----------------------------------
---[CRON]---05/21/08-05:15:00-------- Message Started found in /RCEBTM_appli/RCEBMA/log
---[CRON]---05/21/08-05:15:00-------- Starting RCE
---[CRON]---05/21/08-05:15:00-------- Starting RCE servers ...
XXXXX.XXXXX!BBL.21394: 052108: TUXEDO Version 6.5 HP-UX B.11.00 U XXXX/XXXXXXX unlimited-user license.
- sending file with ftp: success
 ---------05/21/08-19:55:00-------- IN CRON_STATUS -----------------------------------
---------05/21/08-19:55:00-------- IN CRON_STATUS -----------------------------------
---------05/21/08-20:00:00-------- IN CRON_STATUS -----------------------------------

Please advise.

Thank you in advance.
 

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LEARN ABOUT CENTOS

truncate

TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME

       truncate - shrink or extend the size of a file to the specified size

SYNOPSIS

       truncate OPTION... FILE...

DESCRIPTION

       Shrink or extend the size of each FILE to the specified size

       A FILE argument that does not exist is created.

       If  a  FILE  is	larger than the specified size, the extra data is lost.  If a FILE is shorter, it is extended and the extended part (hole)
       reads as zero bytes.

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

       -c, --no-create
	      do not create any files

       -o, --io-blocks
	      treat SIZE as number of IO blocks instead of bytes

       -r, --reference=RFILE
	      base size on RFILE

       -s, --size=SIZE
	      set or adjust the file size by SIZE bytes

       --help display this help and exit

       --version
	      output version information and exit

       SIZE is an integer and optional unit (example: 10M is 10*1024*1024).  Units are K, M, G, T, P, E, Z, Y (powers of  1024)  or  KB,  MB,  ...
       (powers of 1000).

       SIZE  may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
       down to multiple of, '%' round up to multiple of.

       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>	Report	truncate  translation  bugs   to   <http://translationpro-
       ject.org/team/>

AUTHOR

       Written by Padraig Brady.

COPYRIGHT

       Copyright (C) 2013 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

       dd(1), truncate(2), ftruncate(2)

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

	      info coreutils 'truncate invocation'

       should give you access to the complete manual.

GNU coreutils 8.22						     June 2014							       TRUNCATE(1)
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