For me personally, integration with something similar to the plex_debrid script. I love how easy it is to add something my plex watchlist and have the plex_debrid script fetch it, add it to my debrid account, update the network mount, and automatically refresh my plex library in a matter of 2 minutes tops.

If jellyfin had a similar integration/feature I would switch over in a heartbeat.

+1 DietPi

To navigate to the previous folder

cd -

To reissue the previous command with a prefix. For example:

cat /root/.ssh/authorized_keys # Will fail without privilege

sudo !!

To use the argument of the previous command. For example:

tac ~/.ssh/authorized_keys # oops, misspelled cat

cat !$