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Steven
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It's FOSS
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Five Linux Server Administration Mistakes And How To Avoid Them
In 2017, an employee at GitLab, the version control hosting platform, was asked to replicate a database of production data. Because of a configuration error, the replication did not work as expected, so the employee decided to remove the data that had been transferred and try again. He ran a command to delete the unwanted data, only to realize with mounting horror that he had entered the command into an SSH session connected to a production server, deleting hundreds of gigabytes of user data. Every seasoned system administrator can tell you a similar story.
The Linux command line gives server admins control of their servers and the data stored on them, but it does little to stop them running destructive commands with consequences that can’t be undone. Accidental data deletion is just one type of mistake that new server administrators make.
| Fedora 31 Looking At No Longer Building i686 Linux Kernel Packages
Not to be confused with Ubuntu's varying stance on dropping 32-bit packages beginning with their next release later this year, Fedora 31 now has a proposal pending to discontinue their i686 kernel builds but they will still be keeping with their 32-bit packaging.
This Fedora 31 change proposal by Justin Forbes, one of Fedora's kernel hackers, is just about ending i686 kernel builds beginning with this Fedora release due out in October. The i686 kernel-headers package would still be offered in order to satisfy necessary dependencies for 32-bit programs needing those headers. Of course, users will have to be running off a 64-bit kernel. All 32-bit programs should continue to work on Fedora 31.
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Deprecating a.out Binaries
Remember a.out binaries? They were the file format of the Linux kernel till around 1995 when ELF took over. ELF is better. It allows you to load shared libraries anywhere in memory, while a.out binaries need you to register shared library locations. That's fine at small scales, but it gets to be more and more of a headache as you have more and more shared libraries to deal with. But a.out is still supported in the Linux source tree, 25 years after ELF became the standard default format.
Recently, Borislav Petkov recommended deprecating it in the source tree, with the idea of removing it if it turned out there were no remaining users. He posted a patch to implement the deprecation. Alan Cox also remarked that "in the unlikely event that someone actually has an a.out binary they can't live with, they can also just write an a.out loader as an ELF program entirely in userspace."
| An easier way to test Plasma
Having the Plasma and Usability & Productivity sprints held at the same time and place had an unexpected benefit: we were able to come up with a way to make it easier to test a custom-compiled version of Plasma!
Previously, we had some documentation that asked people to create a shell script on their computers, copy files to various locations, and perform a few other steps. Unfortunately, many of the details were out of date, and the whole process was quite error-prone. It turned out that almost none of the Plasma developers at the sprint were actually using this method, and each had cobbled together something for themselves. Some (including myself) had given up on it and were doing Plasma development in a virtual machine.
So we put some time into easing this pain by making Plasma itself produce all the right pieces automatically when compiled from source. Then, we created a simple script to install everything properly.
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