- Cron expression
- A compact schedule describing minute, hour, day, month, and weekday fields.
- IANA timezone
- A named timezone whose database rules include daylight-saving and historical changes.
- chmod
- The Unix command and permission model for read, write, and execute access.
- Octal permissions
- Three digits representing owner, group, and other permissions; read=4, write=2, execute=1.
- Semantic version
- A MAJOR.MINOR.PATCH version where each part communicates compatibility changes.
- Container image
- A packaged filesystem and metadata used to start isolated application processes.
- Kubernetes manifest
- YAML or JSON declaring a desired Kubernetes resource and its configuration.