Why is 777 assned to chmod to permit everything on a file?

chmod 777 chmod a-w file (removes all writing permissions) chmod o+x file (sets execute permissions for other (public permissions)) chmod u=rx file (Give the owner rx permissions,. Linux777`chmod`Windows777

slot 777, You almost never need 777 permissions on any type of file, and you absolutely never need 777 on a non-executable file. – skiphoppy Commented Apr 4, 2012 at 10:51.