Permission denied for 'sudo' after 'sudo chmod 666 usr'

The installation instructions for some PHP software will instruct you to use the command chmod 777 or chmod 666 to set the correct permissions In most cases

What does chmod 666 mean? Here we will explain how the chmod 666 UNIXLinux command changes your file permissions

chmod 777 I swear that I have an uncanny ability to come up with problems that nobody else can # chmod 666 I can get devsound to be 666 but not the

ssgame6666 Can the PI communication channels pick up files in the file share with chmod 660, does the files need public permissions for PI channels to pick up?