Document that in range the first number must be less than second.

cronie-crond · Nov 28, 2017 · 5290e71 · 5290e71
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Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/man/crontab.5 b/man/crontab.5
@@ -196,7 +196,8 @@ A field may contain an asterisk (*), which always stands for
 .PP
 Ranges of numbers are allowed.  Ranges are two numbers separated with a
 hyphen.  The specified range is inclusive.  For example, 8-11 for
-an 'hours' entry specifies execution at hours 8, 9, 10, and 11.
+an 'hours' entry specifies execution at hours 8, 9, 10, and 11. The first
+number must be less than or equal to the second one.
 .PP
 Lists are allowed.  A list is a set of numbers (or ranges) separated by
 commas.  Examples: "1,2,5,9", "0-4,8-12".