## sample 4
### Authorize
Can User::bob view Photo:VacationPhoto94.jpg
Decision: Allow
Reason: request action is in the allowed action list
```
cargo run authorize \
--policies policy.cedar \
--entities entity.json \
--request-json request.json
```
# Validation
Is policy.cedar valid based on the schema schema.cedarschema
```
cargo run validate \
--policies policy.cedar \
--schema schema.cedarschema
```
### Evaluate
Evaluate a Cedar expression
```
cargo run evaluate \
--request-json request.json \
--entities entity.json \
"resource.owner == User::\"bob\""
```