1) یومسک چی رو باید 022 بذاریم؟منبع (https://en.wikibooks.org/wiki/LaTeX/Installation#Minimal_installation): Download the installer. Open a terminal in the folder and log in as root. Change the umask to 022 to make sure other users will have read-only access to the installed distribution
منبع (http://www.tug.org/texlive/doc/texlive-en/texlive-en.html#x1-160003.1.1): Warning about Unix permissions: Your umask at the time of installation will be respected by the TEX Live installer. Therefore, if you want your installation to be usable by users other than you, make sure your setting is sufficiently permissive, for instance, umask 002
2) تک-لایو رو با sudo نصب کنم یا بدون sudo؟Running the installer: You do not need to be root (administrator on Windows) to install, use, or manage TeX Live. In fact, we recommend installing it as a normal user, except perhaps on MacOSX
منبع (http://www.tug.org/texlive/quickinstall.html)