UNIX File Permissions Tool

Bits
type attrs user group others
SUID SGID sticky r w x r w x r w x
Symbolic
Numeric

User

The owner of the file can read, write, and execute it.

Group

A member of the file's group other than its owner cannot access it at all.

Additionally the SGID bit is set, which means when it's executed, the running process will run with this file's group ID, not the executing user's.

Others

Any other user on the system can execute it.

Additionally the sticky bit is set, which really only means something on directories, these days.