sudo chmod -R a+rwx /path/to/folder
# Change permissions for the root file/dir only
chmod 777 path/to/directory/
# Or
chmod 777 path/to/file
# Change permission for root dir and all files/dirs within
chmod -R 777 path/to/directory/
sudo chmod -R ugo+rwx /path/to/folder
// @Zenonymous
sudo chmod u+w myfolder
sudo find /folder/path/public_html -type f -exec chmod 644 {} ;
sudo find /folder/path/public_html -type d -exec chmod 755 {} ;
sudo find . -type f -exec chmod 664 {} ;
sudo find . -type d -exec chmod 775 {} ;
sudo chown -R $USER:www-data .
### Assign permission to web users for writting folder
sudo chgrp -R www-data storage/framework storage/logs bootstrap/cache
sudo chmod -R ug+rwx storage/framework storage/logs bootstrap/cache