sam: add page (#2779)

pages/linux/sam.md

@@ -0,0 +1,28 @@
+# sam
+
+> AWS Serverless Application Model (SAM) CLI.
+> Homepage: <https://github.com/awslabs/aws-sam-cli>.
+
+- Initialize a serverless application:
+
+`sam init`
+
+- Initialize a serverless application with a specific runtime:
+
+`sam init --runtime {{python3.7}}`
+
+- Package a SAM application:
+
+`sam package`
+
+- Build your Lambda function code:
+
+`sam build`
+
+- Run your serverless application locally:
+
+`sam local start-api`
+
+- Deploy an AWS SAM application:
+
+`sam deploy`