For file and folder management, that number dwindles. I've already listed what I believe are the 5 Linux commands every user should learn, all of which are also related to file and folder management.

Tecmintに10月19日(米国時間)に公開された記事「How to Make File and Directory Undeletable, Even By Root in Linux」が、rootユーザーですら削除することのできない ...

/ The Root Directory Everything on your Linux system is located under the / directory, known as the root directory.

These options are used to create the cd-rom directory tree, the root filesystem directory tree, and the initial ramdisk tree. Make sure all the boxes are checked STEP8.

A chroot is a root Linux file system within another. So by creating one, we can put ourselves inside our OS-in-progress and paint the house from the inside, so to speak.