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Octal and Binary Modes
| Permission | Read | Write | eXecute |
|---|---|---|---|
| Letter | r | w | x |
| Octal valuee | 4 | 2 | 1 |
| Octal digit | Text equivalent | Binary value | Meaning |
|---|---|---|---|
| 0 | --- |
000 | No permission |
| 1 | --x |
001 | Execute |
| 2 | -w- |
010 | Write |
| 3 | -wx |
011 | Write + Execute |
| 4 | r-- |
100 | Read |
| 5 | r-x |
101 | Read + Execute |
| 6 | rw- |
110 | Read + Write |
| 7 | rwx |
111 | Read + Write + Execute |
