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03-15-2008
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Processing a log file based on date/time input and the date/time on the log file
Hi,
I'm trying to accomplish the following and would like some suggestions or possible bash script examples that may work I have a directory that has a list of log files that's periodically dumped from a script that is crontab that are rotated 4 generations. There will be a time stamp that is associated when the file is created. application.log.1 application.log.2 application.log.3 application.log.4 application.log.5 I have another script that will take an input of date/time, I'm not sure which is the easiest format to compare, from the short look around it sounds like epoch is the easiest/fastest. I would like to take that format whichever it is, and basically subtract 5minutes which is a poll period thats been defined and then use that date/time to compare with the logs that are rotated and basically process the log that closely matches the "currentInputDateTime" where it can not be larger than "currentInputDateTime" but less than/equal to the current time, I assume this might be a "ls -tr | awk '{print $6 $7}' to get the date/time and somehow convert those to epoch. I was wondering if this was something that has been encountered before so the wheel does not have to be re-invented. Thanks in advance |
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03-15-2008
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03-16-2008
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I was taking a look at those links and I saw that you could pass in a parameter such as the following:
date -d "2008-03-15 11:40" --date="5 minutes ago" +%F==%I:%M Though the output was: 2008-03-15==09:30 I was expecting to get back 11:35 for the time, is there something I'm missing to take a date format and subtract 5minutes from that time and convert it to epoch time to compare with other epoch values? |
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03-16-2008
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It should be something like: Code:
date --date "2008-03-15 11:40 5 min ago" +%F==%I:%M But what is the reason for using this format "+%F==%I:%M"? You can get the epoch time of 5 minutes ago with: Code:
date --date "2008-03-15 11:40 5 min ago" +%s Regards |
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03-16-2008
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Thank you, I was going down that route of using the "5 minutes ago" but didn't realize it was support to be part of the input string, that was where I got confused on and I did not couldn't find an example online or was not reading the man pages correctly. I'll try what you've provided with my script to see if I can get this working
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