Obligatory mention for those who don’t know yet : you can find what files a program use by using
strace <command>(provided strace is installed). It actually logs all syscalls made by the program, so there will be a lot of noise, but in there you will find theaccess()andopen()calls.Additionally, if you want to strace programs that already are running in a convenient interface,
htophas strace support (this is less useful to find configuration files, as those are usually read at the start of the program, but if you can trigger a save to the file, it will appear here).Wow! I did not know about htop’s built in support. That’s awesome to know about, thanks!
Yeah, it’s easy to miss. :) I think it’s been there for something like about 5 years? (don’t quote me on that). But it only appears if strace is available, and even then it’s a bit hidden in the interface. I discovered it the way I learn new features in vim : by mistyping.
It’s often not up to the app. It can be up to the packager, the distro, or the user if they change the XDG config directory.
Never found an app with configuration file that didn’t have that info at the man page …
