Common chmod Values
| Octal | Symbolic | Use Case |
|---|---|---|
644 | rw-r--r-- | Regular files (owner read/write, others read) |
755 | rwxr-xr-x | Directories and scripts (owner full, others read/execute) |
600 | rw------- | Private files (SSH keys, credentials) |
700 | rwx------ | Private directories or scripts |
777 | rwxrwxrwx | Full access for everyone (usually unsafe) |
400 | r-------- | Read-only for owner |
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