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Full Discussion: How to cut specific line and one line under?
Top Forums Shell Programming and Scripting How to cut specific line and one line under? Post 302423057 by nir_s on Thursday 20th of May 2010 05:15:59 AM
Old 05-20-2010
How to cut specific line and one line under?
Hi guys,

I need to analyze the following alert log file:
Code:
Beginning log switch checkpoint up to RBA [0x4243f.2.10], SCN: 3916025539605
Sat May  1 00:54:52 2010
Thread 1 advanced to log sequence 271423 (LGWR switch)
  Current log# 1 seq# 271423 mem# 0: /dw/stg_redo01/log_dwstg_g1_m1.log
  Current log# 1 seq# 271423 mem# 1: /dw/stg_redo02/log_dwstg_g1_m2.log
Sat May  1 00:54:56 2010
Completed checkpoint up to RBA [0x4243f.2.10], SCN: 3916025539605
Sat May  1 00:57:40 2010
Beginning log switch checkpoint up to RBA [0x42440.2.10], SCN: 3916026109591
Sat May  1 00:57:40 2010
Thread 1 advanced to log sequence 271424 (LGWR switch)
  Current log# 4 seq# 271424 mem# 0: /dw/stg_redo01/log_dwstg_g4_m1.log
  Current log# 4 seq# 271424 mem# 1: /dw/stg_redo02/log_dwstg_g4_m2.log
Sat May  1 00:57:52 2010
Completed checkpoint up to RBA [0x42440.2.10], SCN: 3916026109591

From this file I need to cut the lines that beginning with "Beginning log switch checkpoint up to RBA" and every line under this line which reflect the time stamp.
The final file should be as the following:
Code:
Beginning log switch checkpoint up to RBA [0x42428.2.10], SCN: 3916022809348
Sat May  1 00:00:29 2010
Beginning log switch checkpoint up to RBA [0x42429.2.10], SCN: 3916022929579
Sat May  1 00:02:52 2010
Beginning log switch checkpoint up to RBA [0x4242a.2.10], SCN: 3916022993393
Sat May  1 00:04:12 2010
...

How to do it with sed command?

Thanks in advance,
Nir
 

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LEARN ABOUT CENTOS

doveadm-log

DOVEADM-LOG(1)							      Dovecot							    DOVEADM-LOG(1)

NAME

       doveadm-log - Locate, test or reopen Dovecot's log files

SYNOPSIS

       doveadm [-Dv] log errors [-s min_timestamp]
       doveadm [-Dv] log find [directory]
       doveadm [-Dv] log reopen
       doveadm [-Dv] log test

DESCRIPTION

       The  doveadm  log commands are used to locate and reopen the log files of dovecot(1).  It's also possible to test the configured targets of
       the *log_path settings.

OPTIONS

       Global doveadm(1) options:

       -D     Enables verbosity and debug messages.

       -v     Enables verbosity, including progress counter.

COMMANDS

   log errors
       doveadm log errors [-s min_timestamp]

       The log errors command is used to show the last	- up to 1,000 - errors and warnings.  If no output is generated, no errors  have  occurred
       since the last start.

       -s min_timestamp
	      An  integer  value, representing seconds since the epoch - also known as Unix timestamp.	When a min_timestamp was given, doveadm(1)
	      will only show errors occurred since that point in time.

   log find
       doveadm log find [directory]

       The log find command is used to show the location of the log files, to which dovecot(1) sends its log messages.	 If  dovecot(1)  logs  its
       messages  through  syslogd(8)  and doveadm(1) could not find any log files, you can specify the directory where your syslogd writes its log
       files.

   log reopen
       doveadm log reopen

       This command causes doveadm to reopen all log files, configured in the log_path, info_log_path and debug_log_path settings.  These settings
       are configured in /etc/dovecot/conf.d/10-logging.conf.
       This is for example useful after manually rotating the log files.

   log test
       doveadm log test

       This command causes doveadm to write the message "This is Dovecot's priority log (timestamp)" to the configured log files.  The used prior-
       ities are: debug, info, warning, error and fatal.

EXAMPLE

       This example shows how to locate the log files used by dovecot(1).

       doveadm log find
       Looking for log files from /var/log
       Debug: /var/log/dovecot.debug
       Info: /var/log/mail.log
       Warning: /var/log/mail.log
       Error: /var/log/mail.log
       Fatal: /var/log/mail.log

REPORTING BUGS

       Report bugs, including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>.  Information about reporting bugs	is  avail-
       able at: http://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1)

Dovecot v2.2							    2013-11-24							    DOVEADM-LOG(1)
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