Merge pull request #355 from shigemk2/curl-only-status-code

Add cheatsheet for cp backup file with date

cheat/cheatsheets/curl

@@ -36,3 +36,6 @@ curl --limit-rate 1000B -O http://path.to.the/file
 
 # Get your global IP
 curl httpbin.org/ip 
+
+# Get only the HTTP status code
+curl -o /dev/null -w '%{http_code}\n' -s -I URL