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Top Forums UNIX for Beginners Questions & Answers Extract lines if string found from last 30 min only Post 303030514 by rockstar on Tuesday 12th of February 2019 08:50:52 AM
Old 02-12-2019
Code:
#!/bin/bash

to=`date +"<%b%_d, %Y,%l:%M:%S,%3N %p %Z>"`
let from_in_seconds=`date +%s`-5000
from=`date -d @$from_in_seconds +"<%b%_d, %Y,%l:%M:%S,%3N %p %Z>"`
awk '$0>=from && $0<=to' from="$from" to="$to" file.log

Below string matches the date format that I have it in logs but awk not working

Code:
$date +"<%b%_d, %Y,%l:%M:%S,%3N %p %Z>"
 <Feb12, 2019, 1:36:55,448 PM UTC>


below string provide the dates past 30 minutes but while using it in awk it won;t work.

Code:
date --date='30 minutes ago' -u '+%b%_d, %Y, %T,%3N %p %Z'
 Feb12, 2019, 13:13:03,306 PM UTC




Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!


--- Post updated at 01:50 PM ---

yes, <data> keep logging from the application regularly day and night in ascending order. Although, I am least concerned about the avoiding the date format (2019-02-12T12:26:59.842+0000: 45.152) but would like to have lines pulled when string matches that are from last 30 minutes only which has below date format.
<Feb 12, 2019, 12:26:54,974 PM UTC>

Last edited by RudiC; 02-12-2019 at 09:45 AM.. Reason: Added CODE tags.
 

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DATE(1) 						      General Commands Manual							   DATE(1)

NAME
date - print or set the date and time SYNOPSIS
date [-qsu] [[MMDDYY]hhmm[ss]] [+format] OPTIONS
-q Read the date from stdin -s Set the time (implicit for -q or a date string) -u Print the date as GMT -t Use this number of seconds instead of current time EXAMPLES
date # Print the date and time date 0221921610 # Set date to Feb 21, 1992 at 4:10 p.m. DESCRIPTION
With the -q flag or a numeric argument, date sets the GMT time and date. MMDDYY refers to the month, day, and year; hhmmss refers to the hour, minute and second. Each of the six fields must be exactly two digits, no more and no less. date always display the date and time, with the default format for the system. The -u flag request GMT time instead of local time. A format may be specified with a + followed by a printf-like string with the following options: %% % character %A Name of the day %B Name of the month %D mm/dd/yy %H Decimal hour on 2 digits %I Decimal hour modulo 12 on 2 digits %M Decimal minute on 2 digits %S Decimal seconds on 2 digits %T HH:MM:SS %U Decimal week number, Sunday being first day of week %W Decimal week number, Monday being first day of week %X Same as %T %Y Decimal year on 4 digits %Z Time Zone (if any) %a Abbreviated name of the day %b Abbreviated name of the month %c Appropriate date & time (default format) %d Decimal day of the month on 2 digits %e Same as %d, but a space replaces leading 0 %h Same as %b %j Decimal dey of the year on 3 digits %m Decimal month on 2 digits %n Newline character %p AM or PM %r 12-hour clock time with AM/PM %s Number of seconds since the epoch %t Tab character %w Decimal day of the week (0=Sunday) %x Same as %D %y Decimal year on 2 digits SEE ALSO
time(2), ctime(3), readclock(8). DATE(1)
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