Batch jobs are typically scheduled in queue b . Other queuenames vary by Unix implementation. Specify an execution time using the same format as the touch command. Remove previously scheduled at-jobs so that they do not run. Hours can be given with one or two digits.
Minutes are optional.
Time is specified using a 24-hour clock unless am or pm is added. These keywords can be used in place of an hour and minute specification. Now is usually followed by an increment specification. Capitalization doesn't matter. Day is the numeric day of the month and year must be specified with four digits.