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Asked by imsysadmin in Miscellaneous Programming
We have logfiles that are machine data samples. The logs are by hour, and the data they contain are every 10 seconds. Thus, each hourly log file is ~36,000 lines. There is some variance in when the logs start and end as far as time, so there is no set consistency to an exact number of lines or how many lines exist per second or minute. Thus there are about 24 logs in the directory (one for each hour)
I want to sample each log file and pull the first line (field info), the second line (first sample) and every 575th or so line (essentially capturing one sample for every minute in the log file)after that until it runs the end of the file. I want these samples written to a new file, prefixed with "SD-" and then the original filename (SD being Sample Data). So, the resulting hourly file would be ~60 Lines of Sample Data of the 36,000 Line original file.
Please let me know if I can clarify anything. TIA!
20091028-EE-VQP-86 / EE_QW_1_20070628