2026-08-05 22:57:04Niklas Polke:
Update Special Bits
linux/chmod.md ..
@@ 52,3 52,15 @@
```
Both notations achieve the same result. Numeric notation is commonly used for setting complete permission sets, while symbolic notation is useful for modifying specific permissions.
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## Special Bits
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| Bit | Octal | Letter | on file | on directory |
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| - | - | - | - | - |
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| Setuid | 4 | u+s | program runs with uid of file | --- |
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| Setgid | 2 | g+s | program runs with gid of file | directory passes group of directory to new files/directories beneath |
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| Sticky | 1 | +t | --- | the files within the directory are only deletable and renamable from owner of directory or file |
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example:
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```
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3770 Setgid + Sticky-Bit + rwx for user, rwx for group and none for other
