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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 PLAN9

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

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

AUTHOR

       Written by Padraig Brady.

REPORTING BUGS

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

COPYRIGHT

       Copyright (C) 2017 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)

       Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
       or available locally via: info '(coreutils) truncate invocation'

GNU coreutils 8.28						   January 2018 						       TRUNCATE(1)
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