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Top Forums Shell Programming and Scripting Scan of log file in Linux for entries in last 15 minutes for matching a pattern Post 302891423 by blackrageous on Wednesday 5th of March 2014 05:30:21 PM
Old 03-05-2014
Logic would be...

1. Get current time

2. subtract 15 minutes from time

3. Convert it to the same format as the log entry: YYYY-01-27 and HH:MM.SS.ddd (you only need the HH:MM)

Code:
date --date-string="- 15 minutes"....depends on o/s...this works on bash

or

date  +%Y-%M-%dT%H:%M --date="-15 minutes"
2014-21-05T16:21

4. grep or awk the log file (using regular expression if need be)...

something to get you started

Last edited by blackrageous; 03-05-2014 at 06:40 PM..
 

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sttime(3)						    ShapeTools Toolkit Library							 sttime(3)

NAME
stMktime, stWriteTime - date and time handling SYNOPSIS
#include <config.h> #include <sttk.h.h> time_tstMktime (char *string); char*stWriteTime (time_t date); DESCRIPTION
stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is a list of all valid formats, optional parts in brackets. [Tue] Jan 5[,] [19]93 This includes the standard asctime(3) format. Jan 5 With no year given, the year defaults to the current year. [19]93/01/05 This notation requires month and day represented by exactly two digits. 5.1.[19]93 This is the usual German notation. 5.1. German notation referencing the current year. A certain time, given together with the date must always have the following form. hours:minutes[:seconds] Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values below 10 may be written as one digit numbers. The time value may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white- space may be given between a field of the time value and the separating colon. The time is always considered to be local time. stWriteTime generates a time string similar to asctime(3) from its date argument. SEE ALSO
asctime(3) BUGS
Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure. sttk-1.7 Thu Jun 24 17:43:35 1993 sttime(3)
All times are GMT -4. The time now is 10:08 AM.
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