sudo chown -R owner html
sudo chmod -R 0755 html
exit

sudo chmod 0755 */



TIP:

Linux permissions can be represented with numbers, letters, or words. They also include an entry for Owner, Group, and Everyone.

    755 stands for Owner: read, write, execute; Group: read, execute; Everyone: read, execute
    644 stands for Owner: read, write; Group: read, Everyone: read
    700 stands for Owner: read, write, execute; Group: (none); Everyone: (none)