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Top Forums Shell Programming and Scripting Extracting lines in file based on time Post 302334948 by rakeshawasthi on Friday 17th of July 2009 12:49:53 AM
Old 07-17-2009
Assuming Jun 18 does not change, and only time stame HH:MI:SS is considered
Try:
Code:
#!/bin/ksh
#set -x

_minPrev=15
_currTimeInSec=$(echo `date "+%T"` | awk -F":" '{print $1*3600+$2*60+$3}')
(( _prevTimeInSec = ${_currTimeInSec} - (0+60*${_minPrev}+0) ))

while read line
do
   _timeInFile=$(echo $line | awk '{FS="[: ]+"}{print $3*3600+$4*60+$5}')

   if [[ ${_timeInFile} -ge ${_prevTimeInSec} && ${_timeInFile} -le ${_currTimeInSec} ]]; then
      echo $line
   fi
done < input


I think extending it for MM and DD should not be an issue for you.
 

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print(1)							   User Commands							  print(1)

NAME
print - shell built-in function to output characters to the screen or window SYNOPSIS
ksh print [ -Rnprsu [n]] [arg...] DESCRIPTION
ksh The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1). OPTIONS
The following options are supported: -n suppresses new-line from being added to the output. -R -r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than -n. -p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output. -s causes the arguments to be written onto the history file instead of standard output. -u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1. EXIT STATUS
The following exit values are returned: 0 Successful operation. >0 Output file is not open for writing. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
echo(1), ksh(1), attributes(5) SunOS 5.10 15 Apr 1994 print(1)
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