Does a normal* user have permissions to write anywhere else than his own home dir? (no sudo and those privilege escalation tools)I say normal because I do not know more categories than root and normal. Let say the involved user installed the system and do the administrative things with sudo <command>.I use Ubuntu, by the way.Thanks.
Does a user have permissions to write outside /home/userDir?
permissions;filesystems;users;root;not root user
Yes. The normal/unprivileged user can write to /tmp and /var/tmp, for legitimate reasons. Also, if the user or group permissions of a given file/directory includes those of the user, he or she can write to those files or directories as well.Having said that, providing write capability to operating system files and directories to a normal user, is shooting one's self at the foot, as best as an analogy goes. There is a lot to say about this but this is not the place. If you are curious about why ? I suggest searching for and reading articles about UNIX/Linux system administration best practices.