POSIX¶
Term: POSIX
Definition: Stands for “Portable Operating System Interface” (the X stands for UNIX) A family of standards that defines compatibility between different Unix-like Operating Systems. If an API works on Unix-like system A, then it should work on a Unix-like system B.
POSIX Model of permission:
- Permissions apply to three rigid categories:
- User (Owner)
- Group
- Others (World)
- The Bits: Read (r), Write (w), Execute (x)
- Representation: Octal (e.g., 755) or symbolic (rwxr-xr-x).
Example: Linux and MacOS are POSIX compliant,
Related Concepts: Unix-Like, Linux, Permissions