usersid/etc/passwd: defines users, their primary groups and login shell/etc/shadow: password (hash) database/etc/groups: defines all other groups a user is in
File /etc/sudoers defines users (and options) related to command sudo. It might make sense to specify a varying umask in ~/.bashrc.
if [[ $(id -u) -eq 0 ]]; then umask 0022 else umask 0027 fi
iptables -L -n -vsudo ufw status verbosesudo ufw app listsudo ufw allow from 192.168.178.0/24 to any app samba4sudo ufw delete allow from 192.168.178.0/24 to any app samba4/etc/ufw/applications.d/*: predefined UFW application profiles/var/log/ufw.log: UFW log (for example blocked packets)Some links only…