Comments by "Lawrence D’Oliveiro" (@lawrencedoliveiro9104) on "Fedora 39 Changes 1 Line Saving Hours Of Pain" video.

  1. 12:28 Every time I change some config file in /etc from its default state, I like to keep a copy of the original file with the same name plus an “-orig” suffix. That way I can use a simple command like “find /etc -name \*-orig” to list all the places I have made configuration changes. Of course, this doesn’t work when adding new files.
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  2. Remember also that when you ask the Linux kernel for more memory, by default it always says “yes”. Because it doesn’t actually need to allocate any RAM until you try to make use of it. This is called “overcommit”. And then, if it turns out you are trying to use too much and the system runs low, the dreaded “OOM Killer” kernel thread wakes up and goes looking for victims to terminate ...
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  3. I like the empty file idea. Remember, I want to track changes from default settings. If I wanted more versioning than that, I could use a VCS.
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  4. The crazy thing is this parameter controls the number of separate vm areas your process can have, not the size of an area. The Linux kernel docs mentions the example of a malloc debugging tool which creates a new area for every single memory object your program creates -- now there’s a way to chew through your vm-area limit quickly ...
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  5. 10:01 This is really only an issue with coredumps. And you probably don’t bother with those.
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  6. But Linux has no 16-bit ABI. How do you write a “16-bit binary” that runs under it?
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  7. By the way, anybody else notice the “Influencer-Free Zone” T-shirt?
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  8. 5:07 One thing you didn’t explain is: what exactly is “lowmem”?
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  9. Microsoft: “26 drive letters ought to be enough for anybody!” 🐧:\>
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  10.  @SkyFly19853  Nobody cares about Windows 7 any more. Certainly nobody in the Linux world. Stop living in the past.
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