[hnthrowaway0328]

Just curious, do you expect people from other background to have non-trivial knowledge of Linux admin? The problem is, for sure I can 1) study for a Linux exam or 2) setup a server in homelab, but for 1) most likely I'd forget about most of the knowledge in 1-6 months, and 2) most likely I don't need any advanced knowledge.

Does it eventually fall to whether I have the right connection? Anyway I'm trying to apply with some basic Linux knowledge (it's one of my daily OS), so far without any luck.

[hitsurume]

The hardest thing about developing linux skills is having consistent exposure. At a work setting its a lot easier because you are hosting applications that people will use. So people will notice if the application stops working, and its someone job to figure out why. The application might have crashed, the disk might be full, the network might be down. As you troubleshoot issues you gain experience and you remember more. The closest thing to at home is running something like a plex server or even your own ftp/dropbox clone. Something where other people will use it, which ofrces you to make sure its always running, needs to be updated because of OS updates or app updates, and possibly needing to expand it.