+    
+┌──────────── [optional] seconds (0 - 59)
+| ┌────────── minute (0 - 59)
+| | ┌──────── hour (0 - 23)
+| | | ┌────── day of month (1 - 31)
+| | | | ┌──── month (1 - 12) OR jan,feb,mar,apr ...
+| | | | | ┌── day of week (0 - 6, sunday=0) OR sun,mon ...
+| | | | | |
+* * * * * * command
+
+
+    
+      
+        
+          | +            Symbol
++ | +            Meaning
++ | +            Example
++ | +            Equivalent
++ | 
+      
+      
+        
+          | *+ | Any value+ | + +* * * *+ | Every minute+ | 
+        
+          | -+ | Range of values+ | + +1-10 * * *+ | Minutes 1 through 10+ | 
+        
+          | ,+ | List of values+ | + +1,10 * * *+ | At minutes 1 and 10+ | 
+        
+          | /+ | Step values+ | + +*/10 * * *+ | Every 10 minutes+ | 
+        
+          | @yearly+ | Once every year at midnight of 1 January+ | + +@yearly+ | 0 0 1 1 *+ | 
+        
+          | @annually+ | Same as @yearly+ | + +@annually+ | 0 0 1 1 *+ | 
+        
+          | @monthly+ | Once a month at midnight on the first day+ | + +@monthly+ | 0 0 1 * *+ | 
+        
+          | @weekly+ | Once a week at midnight on Sunday morning+ | + +@weekly+ | 0 0 * * 0+ | 
+        
+          | @daily+ | Once a day at midnight+ | + +@daily+ | 0 0 * * *+ | 
+        
+          | @midnight+ | Same as @daily+ | + +@midnight+ | 0 0 * * *+ | 
+        
+          | @hourly+ | Once an hour at the beginning of the hour+ | + +@hourly+ | 0 * * * *+ | 
+        
+          | @reboot+ | Run at startup+ | + | + | 
+      
+    
+
+  
+