I wrote a custom package with my most used commands and it works great. However I find the process of keeping it up to date a little involved. Because the /usr/local/texlive/... directory is owned by root, I can't write changes from the editor directly to it. On the other hand I don't have a ~/.tex or any (la)tex-related directory in my home folder. So what I'm doing now is to edit a copy of the .sty file that resides in my ~/ folder and always save it when I make a change. Then I sudo cp it to /usr/local/texlive/..., I rebuild the index and finally I can use it.
Is there a quicker way to make the changes readily available to my system so that I can try them right after having made them?
texmffolder, but I didn't know I could/had to create one myself if it didn't exist. I now read your other answer and it works. It even goes to the extent that TexStudio (nice program) suggests me the new commands I created when I start typing them. And all without rehashing anything. Sorry, but I had to get this out: I'm very impressed and a happy LaTeX user! – Andyc Dec 01 '20 at 19:32