I've been trying to use the quark-config command to change the required percentage of players asleep to go to the next day, but there's a problem with how the command handles spaces. The config category seems to be "tweaks.improved sleeping" (with whitespace) and no amount of escaping or quoting can get the command to read correctly, it always interprets as "tweaks.improved" or a variation of. I have had to do a server shutdown and restart to change the config file.

I believe you replace with spaces with underscores for that case.