Hi I am new to the language of powershell s i though about playing around with it. I am trying to extract information out of a log file (the file belongs to a program called event viewer). I need to use the information under Boot Duration.
Could somebody guide me a little bit?
It will be greatly appreciated
Thanks.
Logs are always the same. Not sure if you are going to monitor boot log of windows or linux or what.. but will try to answer.
If you edit your question and add info on the operating system and an example of relevant lines of boot log file I can provide you with some powershell code.
In general you should do:
Identify how to manually see boot time in log file. For example
probably it will have a starting boot time and a finished boot time.
Something similar to this.
[2012-06-08 12:00:04] starting boot
lot of log entries
[2012-06-08 12:00:34] finished boot
Once you know how to do it manually, you have to convince powershell to do it for you. You can use regular expressions to look for the pattern of dates. In my example look for lines that contains "starting boot" and then parse it to load date.
Here you have an useful link on powershell and regular expressions: http://www.regular-expressions.info/powershell.html
Related
Hi I am Niladri Shekhar De, relatively new to performance testing. I am trying to run my load test (scripted in JMeter) using docker file on AWS. I am editing the docker file as mentioned in docker file this picture. Also, I have edited the entrypoint as this
entry point picture. Then while I am trying to run it is waiting for long after "Waiting for possible shutdown...." line and finally I am getting all 10 errors (My script has 2 transactions and I am running for 5 users) as shown in the picturecloudwatch. The script name may be mentioned here is different than in the docker file but that I have changed later. Could anyone please look into this and help me out? It will really be a great help..
Although your way to take screenshots is fantastic you should not be posting code as images on StackOverflow
Coming back to your question: we cannot see any failure reason there so I would suggest to check:
The .jtl results file, it should have status code, response message, maybe response details, etc.
The jmeter.log file which normally can give a clue regarding what's wrong. If it doesn't - you can try increasing JMeter logging verbosity
I'm new to kubernetes and am still trying to extract log from a few lines and write it, if anyone can help me what commands i should execute.
If the pod is named bino, and i wanted to extract the lines corresponding to the error unable-to-access-website, and then write them to a certain location, say John/Doe/bino. How would i do this is there a easy command?
I tried using kubectl log bino, but it just dumps all the output on the terminal, if i wanted to write certain parts how can i do it? Thanks!
Or if anyone has played around in katacoda i would appreciate a link to a similar example.
You can use grep in linux to fetch the relevant log messages you want:
kubectl log bino | grep "error unable-to-access-website" >> John/Doe/Bino/log.txt
Hope this helps.
If you are not that familiar with grep and regular expressions in general, then you can use the Retrospective Log Analyzer https://retrospective.centeractive.com/tutorial_monitorcontainer.html which will do the heavy regex work for you.
It makes extracting certain parts of the logs much easier, you can extract parts from log files and from container logs of Kubernetes and Docker without having to write complex regular expressions.
I have a rails app and I would like to display the log in the app itself. This will allow administrators to see what changes were recently made without entering the console and using the file with the logs. All logs will be displayed in the application administration. How is it possible to implement and what kind of gems do I need to use?
You don't need a Gem.
Add a controller, read the logfiles and render the output in HTML.
Probably need to limit the number of lines you read. Also there might be different log files to chose from.
I don't think this is a good idea though. Log files are for finding errors and you should not need them in your day to day work, unless you manage ther server.
Also they might contain sensitive data (CC Numbers, Pwds, ...) and it might get complicated when you use multiple servers with local disks.
Probably better to look at dedicated tools for this and handle logs outside of your application.
Assuming that you have git associated with your application or git bash installed in your system.
For displaying log information for the development mode, migrate to your application folder in your console/terminal and type tail -f log/development.log
How can you instruct an application or the printer to only print the first page, a page range or just odd or even pages of a file? I attempt this with the help of the Preview app, which looks promising:
set theFile to "[file-path/file]""
tell application "Preview"
activate
print theFile with properties {target printer:"Printer", ending page:1} without «class pdlg»
--these properties isn't available for the printer app, here just limiting amount of printed pages
quit
end tell
But with this I'm bitten by the sandboxd process that tells me the file can't be opened for printing and I get a deny file-read-data result in the log.
In the CUPS suggestion by adamh I encounter issues with umlauts and have other execution issues as well, possibly also because of sandbox rules. The code works from the command line, but not when called in automated fashion.
I tried to look up useful examples of the print command in a reference, in my books and tried searching the online Apple references, but I can't seem to find many examples fitting to the present day situation with sandbox, if any.
You could script printing by command line tool lp & lpr.
These talk to CUPS, Common Unix Printing System
To target pages / ranges:
lp -o page-ranges=2-4 "my_great_document.pdf"
To call it from applescript use do shell script
e.g,
do shell script "lp -o page-ranges=2-4 'my_great_document.pdf'"
For more ideas see: http://www.cups.org/documentation.php/options.html
I have been able to build rabbitmq server on ubuntu linux. It came already prepackaged and on making, it is able to start as a service. When i got the client source, i failed to make because it appeared like it needed a folder called ./deps/rabbitmq-server. Analysing the code, i find that the author of the client was accessing the same header files as are found in the server, using include_lib("path to rabbit.hrl e.t.c") in his header file called "amqp_client.hrl". I then decided to add rabbitmq_server in the lib dir of erlang so as its paths are automatically added on start up of the vm. But still this didnot help. There is also another folder which the client references called "rabbit_common" for an include folder he assumes would contain all the .hrl files there. Please assist me in building both the client and server on my ubuntu server, for testing.
Also, if anyone has used RabbitMQ server for IMs, please provide some benchmarks and/or your findings on its throughput, speed and number of users. How can it be compared to ejabberd?. How can one create AJAX/Jquery/Javascript clients for Web functionality?
thanks
I hope you had made some progress as far as RabbitMQ and ejabberd are concerned.
Below is a link to an interesting discussion that might be of help.
http://old.nabble.com/AMPQ-vs-XMPP-and-RabbitMQ-vs-ejabberd-td17587109.html