+    # Desc: Count and return total number of jobs
+    # Usage: count_jobs
+    # Input: None.
+    # Output: stdout   integer number of jobs
+    # Depends: Bash 5.1.16
+    # Example: while [[$(count_jobs) -gt 0]]; do echo "Working..."; sleep 1; done;
+    # Version: 0.0.1
+