rwxrxr

rwxrxr is a six-character string made up of the letters r, w and x. It does not correspond to a standard permission representation used in most operating systems, but it can appear in documentation, examples, or puzzle contexts as a shorthand, mnemonic, or identifier.

Composition and validity

The string can be viewed as two triplets: "rwx" and "rxr". In Unix-like file permissions, each triplet is intended to represent the read, write, and execute rights for a user class (such as owner, group, or others). A valid triplet typically uses the characters r, w, and x in their respective positions or a dash (-) to indicate the absence of a permission. Importantly, the middle position in a triplet corresponds to the write permission and cannot be an x. Therefore, "rxr" is not a valid triplet under standard permission notation, and by extension, "rwxrxr" does not constitute a valid complete permission specification in the conventional model.

Usage and interpretation

Beyond strict validity, "rwxrxr" may be encountered as a placeholder, example pattern, or non-standard label in settings such as tutorials, problem statements, or configuration templates. It can serve to illustrate concepts related to access controls without tying the discussion to a specific, executable permission set. In more formal contexts, it is typically treated as a non-standard sequence rather than a literal representation of permissions.

See also

Unix file permissions; chmod; access control lists; permission bits; file system security.