tmikulin.com

File I/O from the Linux Programming Interface book - summary

- files are central to the UNIX philosophy... - all system calls refer to files through "file descriptors" (small non negative numbers) - 0, 1, 2 fd's, they are stdin, stdout and stderr (these are the standard ones that a shell uses...) - main system calls are; - open() if

versions

Check the software versions first...

If you ever find yourself debugging stuff locally, on staging, production etc.......please please please check if the software versions are correct. You wouldn't believe how many (even experienced) people have been bitten by these obvious errors. After hours of debugging, you are still wondering how come that API doesn't

Upgrading to Gitlab 15.0 ahead of time???

Gitlab Enterprise just upgraded us to the 15.0 version ahead of time??? And some of our CI pipelines stopped working? I thought maybe it was some sort of a canary release, as it should have been done on the 22.05.2022!!?? GitLab.com is moving to 15.0

Brendan Gregg is freaking awesome

I just LOVE watching videos of Brendan Gregg on system performance.....you can learn a lot.

Getting Started

Locust.io for load testing

If you are searching for a simple but effective load testing tool with a nice user interface (and it's based on python) then look no further than locust.io. I made an app for our microservices with locust at my job and it was really easy and cool. You can

Getting Started

FreeIPA - Linux SSO

User managent in linux is a tricky beast....it starts creeping when your company starts growing and the number of people working on servers and such starts pilling up. All those people need access to resources. In the days before containers and serverless tech, just old plain servers, developers had