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You surely need to explicitly cause systemd
to process changes after writing to a file. I would be very surprised if it reacted to file system changes automatically.
For example, I recall that I need to execute a command like systemctl daemon-reload
after editing a service
file: https://unix.stackexchange.com/questions/364782/what-does-systemctl-daemon-reload-do
You might get more useful information from resources like https://www.man7.org/linux/man-pages/man1/systemctl.1.html
It will definitely be the only utility I recall that uses a numeral.
Utility names should include lowercase letters (the lower character classification) and digits only from the portable character set.
Note that many versions of macOS adhere to these standards: https://www.opengroup.org/openbrand/register/ https://www.opengroup.org/openbrand/register/brand3700.htm https://www.opengroup.org/openbrand/register/brand3705.htm
I know it had been this way for decades and was grandfathered in as a feature
If people were more resistant to “grandfathered” features I think we would not have as much software as we do today: https://www.jwz.org/doc/worse-is-better.html https://en.wikipedia.org/wiki/Worse_is_better
It’s probably possible to make several programs with “50% functionality” in the time it takes to make one program with 100% functionality. Having more programs that are suitable for a majority of relevant applications is probably better than having one program that is suitable for all relevant applications, since having more programs will probably enable a larger variety of problems to be solved, and people often have to solve many different types of problems in their life.
what does usr mean
https://refspecs.linuxfoundation.org/fhs.shtml https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch04.html
Some operating systems may handle long path or file names in a surprising way, so having short paths and names is useful: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13
{NAME_MAX}
and{PATH_MAX}
are described in more detail at https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html#tag_13_23_03_02 and used in the context of https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pathchk.htmlNote
The resources I linked are descriptive and not prescriptive, but in my experience they are suitable to depend upon as a reliable baseline, which makes meeting client requirements with software engineering easier.