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A screenshot of a file manager preview window for my ~/.cache folder, which takes up 164.3 GiB and has 246,049 files and 15,126 folders. The folder was first created about 1.75 years ago with my system
this post was submitted on 03 Dec 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Indeed, yay utilizes the AUR, which essentially serves as a Git repository for each package. These repositories typically include a PKGBUILD file and a .SRCINFO file, along with possible additional files like patches, desktop, or service files.
For example, take a look at IntelliJ Ultimate: [https://aur.archlinux.org/cgit/aur.git/tree/?h=intellij-idea-ultimate-edition]. It contains the .SRCINFO and PKGBUILD, as well as a .desktop file. These files themselves do not occupy much space.
The PKGBUILD specifies the sources for dependencies. For instance:
The PKGBUILD is essentially a Bash script with predefined functions and variables. You can learn more about it here: [https://wiki.archlinux.org/title/PKGBUILD].
This script primarily downloads and extracts the tar file. In this specific case, it only relocates the files to their intended installation locations, like moving the desktop file to /usr/share/applications.
With such packages, there's a possibility of wasting significant space since the tar file is downloaded and possibly retained in the cache.
However, other packages, especially those compiled from source, usually involve Git clones. These clones bring the Git repository into a subdirectory of the already cloned AUR package Git repo. Some might also have source tarballs. These types of packages generally do not consume much space in the cache, as they are often just text files, like C source code or Python scripts. These packages frequently rely on external libraries and packages, which are not included in this package’s cache.
While binary packages often bundle all necessary libraries and other components in their source tarballs.
The AUR cache is mostly beneficial if you're rebuilding the same version or can reuse components from a previous version. For example, a package might depend on a large, static file that doesn’t change often.
In Paru, I've enabled the "CleanAfter" option to prevent my cache from overflowing. Given my relatively fast internet speed, redownloading large files isn't a major concern for me.