Use the `mv` command:
`mv old_directory new_directory`
Rename a directory with an absolute path:
`mv /path/to/old_directory /path/to/new_directory`
Rename a directory with a relative path:
`mv old_directory renamed_directory`
If the target directory name already exists, `mv` will move the source into it instead of renaming it
Use `sudo` if you do not have permission:
`sudo mv old_directory new_directory`