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Chmod
Symbolic mode
In the symbolic mode, you choose the target (see bellow), the operator, and what are the permissions you with to give (rwx).
shell
chmod u=rwx file
chmod g+w file
chmod o-x file| Repr | Target | Operator | Description |
|---|---|---|---|
u | user/owner | + | Adds a permission to a file or directory |
g | group | - | Removes the permission |
o | other | = | Sets the permission and overrides the permissions set earlier. |
a | all |
Absolute (numeric) mode
bash
chmod 755 some/path| Number | Permission Type | Symbol |
|---|---|---|
| 0 | No Permission | --- |
| 1 | Execute | --x |
| 2 | Write | -w- |
| 3 | Execute + Write | -wx |
| 4 | Read | r-- |
| 5 | Read + Execute | r-x |
| 6 | Read +Write | rw- |
| 7 | Read + Write +Execute | rwx |