logfile-analysis

Extract the unpredictable data that have its own timestamp in a log file using a Shell script

由 一笑奈何 提交于 2021-01-29 14:16:42
问题 log.txt will be as below, which are the ID data with its own timestamp (detection_time) that will continuously update in this log.txt file. The ID data will be unpredictable number. It could be from 0000-9999 and the same ID could be appeared in the log.txt again. My goal is to filter the ID that appears again in the log.txt within 15 sec from its first appearance by using shell script. Can anyone help me with this? ID = 4231 detection_time = 1595556730 ID = 3661 detection_time = 1595556731

Extract occurrence of text between brackets from a text file Python

由 时光总嘲笑我的痴心妄想 提交于 2020-05-07 03:50:07
问题 Log file: INFO:werkzeug:127.0.0.1 - - [20/Sep/2018 19:40:00] "GET /socket.io/?polling HTTP/1.1" 200 - INFO:engineio: Received packet MESSAGE, ["key",{"data":{"tag1":12,"tag2":13,"tag3": 14"...}}] I'm interested in extracting only the text from with in the brackets which contain the keyword "key" and not all of the occurrences that match the regex pattern from below. Here is what I have tried so far: import re with open('logfile.log', 'r') as text_file: matches = re.findall(r'\[([^\]]+)', text

extracting error information from rails log files

由 房东的猫 提交于 2020-01-01 03:09:09
问题 i am developing on 5 different rails projects, plus also refactoring some (moving from older rails versions to 2.3) - what is the best way to extract the error information from the logfiles, so i can see all the depreciation warnings, runtime errors and so on, so i can work on improving the codebase? are there any services or libraries out there you can recommend, that actually help with rails logfile parsing? 回答1: Read about grep linux command. http://www.cyberciti.biz/faq/howto-use-grep

How do I read information from text files?

由 北战南征 提交于 2019-12-20 14:23:35
问题 I have hundreds of text files with the following information in each file: *****Auto-Corelation Results****** 1 .09 -.19 .18 non-Significant *****STATISTICS FOR MANN-KENDELL TEST****** S= 609 VAR(S)= 162409.70 Z= 1.51 Random : No trend at 95% *****SENs STATISTICS ****** SEN SLOPE = .24 Now, I want to read all these files, and "collect" Sen's Statistics from each file (eg. .24 ) and compile into one file along with the corresponding file names. I have to do it in R. I have worked with CSV

How can I tell when my dataset in R is going to be too large?

由 你离开我真会死。 提交于 2019-12-17 17:24:35
问题 I am going to be undertaking some logfile analyses in R (unless I can't do it in R), and I understand that my data needs to fit in RAM (unless I use some kind of fix like an interface to a keyval store, maybe?). So I am wondering how to tell ahead of time how much room my data is going to take up in RAM, and whether I will have enough. I know how much RAM I have (not a huge amount - 3GB under XP), and I know how many rows and cols my logfile will end up as and what data types the col entries

Parsing huge logfiles in Node.js - read in line-by-line

由 断了今生、忘了曾经 提交于 2019-12-17 00:20:54
问题 I need to do some parsing of large (5-10 Gb)logfiles in Javascript/Node.js (I'm using Cube). The logline looks something like: 10:00:43.343423 I'm a friendly log message. There are 5 cats, and 7 dogs. We are in state "SUCCESS". We need to read each line, do some parsing (e.g. strip out 5 , 7 and SUCCESS ), then pump this data into Cube (https://github.com/square/cube) using their JS client. Firstly, what is the canonical way in Node to read in a file, line by line? It seems to be fairly

How to find the difference of time (Time taken to process a file) in R?

由 随声附和 提交于 2019-12-12 02:45:15
问题 I have Log data, it records the Start datetime and end datetime stamp. Data from the log file look as below Preapred data in excel Start_Date1 Start_Time1 Start_Millisecond1 Start_Date2 Start_Time2 Start_Millisecond2 29-11-2015 18:25:04 671 29-11-2015 18:40:05 275 29-11-2015 18:25:03 836 29-11-2015 18:40:04 333 10-11-2015 02:41:57 286 10-11-2015 02:51:52 690 When i load the data into R using Rstudio. The class of data looks as below. Data Loaded and Its data type I am using below line of code

Powershell - how to handle non timestamped log file entries, including blank lines

由 混江龙づ霸主 提交于 2019-12-12 02:17:00
问题 I asked a question about how to extract data from a log file based on a start and end timestamp, recently which I got a great and quick answer for, see this question / post for details. Powershell - How to select a block of text from a text based log file that has a time stamp in the log file entry However, I now find I have an issue in what I am trying to acheive as the log files I am handling / querying do not have a time stamp entry on every line, and in fact some lines are blank and there

Read log file from last read position

由 六眼飞鱼酱① 提交于 2019-12-08 12:57:46
问题 This is my working code, I have a filewatcher monitoring my log file, when the file updates (it updates a lot) it reads the log and outputs the lines that comply with the regex to a textbox. The problem with it is that it reads the file from the beginning and re-prints the regexed lines again so I get repeated data in the textbox. I also don't know if I have it setup correctly to run the file read from a separate thread so my program don't "freeze" while reading large log files. private void

extracting error information from rails log files

由 半城伤御伤魂 提交于 2019-12-03 08:20:14
i am developing on 5 different rails projects, plus also refactoring some (moving from older rails versions to 2.3) - what is the best way to extract the error information from the logfiles, so i can see all the depreciation warnings, runtime errors and so on, so i can work on improving the codebase? are there any services or libraries out there you can recommend, that actually help with rails logfile parsing? Read about grep linux command. http://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-unix/ I don't know what error log format is in Rails, but I guest every row with warning or
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