[Glossary](https://useratio.app/glossary) › Developer terms

# chmod permissions

The Unix command that sets who can read, write and execute a file.

Each digit is the sum of read (4), write (2) and execute (1) for the owner, the group and everyone else. 755 means the owner can do everything and the others can read and run. Ratio spells it out.

## In Ratio

| You type | Ratio shows |
| --- | --- |
| `chmod 755` | rwxr-xr-x |

## Related

[Binary](https://useratio.app/glossary/binary) · [All terms](https://useratio.app/glossary)

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Source: https://useratio.app/glossary/chmod