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+xjobs reads job descriptions line by line and executes them in parallel. It
+limits the number of parallel executing jobs and starts new jobs when jobs
+finish. Therefore, it combines the arguments from every input line with the
+utility and arguments given on the command line. If no utility is given as
+an argument to xjobs, then the first argument on every job line will be used
+as utility. To execute utility xjobs searches the directories given in the
+PATH environment variable and uses the first file found in these directories.
+
+xjobs is most useful on multiprocessor machines when one needs to execute
+several time consuming commands that could possibly be run in parallel. With
+xjobs this can be achieved easily, and it is possible to limit the load of
+the machine to a useful value. It works similar to xargs, but starts several
+processes simultaneously and gives only one line of arguments to each utility
+call.