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Do not update single packages on Archlinux, but
(beehaw.org)
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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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It is OK to use '-S' only if all installed packages are on the same level as the local package info. That is assuming that the cached local version of the package is still available on package servers.
I just think you're being too literal about this, instead of thinking about the reasoning behind that rule.