LNAV: Easy Color Coded Real Time Log File Viewer for Linux

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An advanced log file viewer for the small-scale Watch and analyze your log files from a terminal.
lnav.org/

Опубликовано:

6 окт 2024

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Комментарии : 27

@timothystack 5 лет назад

Hi, I'm the developer, thanks for the video! I don't remember why I stopped making BSD builds, I'll try to get that going again. One tip: tab-completion works in the search prompt for the text that is currently on screen. So, instead of copy & pasting long identifiers, you can type the first few characters of what you're interested in and then press TAB.

@LAWRENCESYSTEMS 5 лет назад

Awesome! Thanks for making this tool! It is really amazing how much power and features you have packed into a single binary executable.

@dreeastwood2500 Месяц назад

Hey Tom, I want to say thank you for the great work you do for homelabbers and people interested in technology. You mentioned this in a recent video (2024) and i have now implemented it in my stack because it has been 5 years since you made this video and it is still relevant!!!.

@holyindian 5 лет назад

Thanks for this, please do try to make a video on how to analyize logs, I am talking about the concept behind what to look for, and identify/analyze.

@zerodegrekelvin2 8 месяцев назад

Thanks for the intro to lnav, I have to parse a tons of logs from difference sources but have a hard time to time align them and doing some correlation. For sure I will give it a try.

@BoltThrower321 5 лет назад

Thanks for the demonstrations of this cool tool. I used some other log parser but the query function of this one is really nice

@nikolaysedletskiy5076 5 лет назад

Thanks for the video. I'm new in Linux platform, so it helps a lot to learn tool and utilities you use to manage your own environment, Hope you will continue to do that.

@lanceeilers5061 5 лет назад

Wow wow blown away , thanks a bunch Tom much appreciated best regards Lance

@bensatunia8842 5 лет назад

Using lnav for a long time and i'm really happy with it

@zabbixtraining 5 лет назад

Sure, Im not saying its not useful in some cases :) Queries could indeed save some time as it is way faster then writing regexp.

@JayChristopherson 5 лет назад

I'll have to give lnav a try. I've been using multitail for things like this.

@Tntdruid 5 лет назад

Very nice tool 👍😁

@JohnDoe_1237 5 лет назад

damn, looks cool, will try it out :) thanks

@zabbixtraining 5 лет назад

Looks like a collection of simple Linux command :) As you mentioned regexp grep, less, cat | wc -l can do same stuff. How this behaves with large files? Multiple Gb?

@LAWRENCESYSTEMS 5 лет назад

I have not tested on files that big, but having the ability to use SQL commands to parse logs makes it really powerful.

@timothystack 5 лет назад

All I can say is to keep an open mind. Sometimes grep/sed is the right tool for the job and sometimes lnav is. As far as performance goes, loading multi-GB files in lnav will probably push the limits of your patience. lnav has to index the whole file before it can start working. On my late-2013 27in iMac, it takes about 3 seconds to index a 400MB web access log with 3 million lines.

@lanceeilers5061 5 лет назад

Interesting , kind of like a Swiss army knife of tools , capable of utilizing SQL and simple Linux commands , would that mean it dumps it into a SQL database format and extract's in real-time as you type in your queries / parameters ? , if so when you finished does it destroy the database or does it cache it for later use ..... thanking you best regards Lance

@zabbixtraining 5 лет назад

If i'm not wrong it utilizes virtual tables, which basically allows sql table interface without database itself. Keeps the data in memory. Sqlite allows that.

@lanceeilers5061 5 лет назад

Wow wow , you guys have so much knowledge , Thanks for that insight , therefore if the query is cached to memory it maybe destroyed over time , when overwritten by another process / or by another query / or when you power the machine down .... very cool stuff :-)