Provided by: bsdutils_2.13-8ubuntu1_i386 bug


      cal - displays a calendar


      cal [-smjy13] [[month] year]


      Cal displays a simple calendar.  If arguments are not specified, the cur‐
      rent month is displayed.  The options are as follows:
      -1      Display single month output.  (This is the default.)
      -3      Display prev/current/next month output.
      -s      Display Sunday as the first day of the week.  (This is the
      -m      Display Monday as the first day of the week.
      -j      Display Julian dates (days one-based, numbered from January 1).
      -y      Display a calendar for the current year.
      -V      Display version information and exit.
      A single parameter specifies the year (1 - 9999) to be displayed; note
      the year must be fully specified: “cal 89” will not display a calendar
      for 1989.  Two parameters denote the month (1 - 12) and year.  If no
      parameters are specified, the current month’s calendar is displayed.
      A year starts on Jan 1.
      The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
      of September.  By this time, most countries had recognized the reforma‐
      tion (although a few did not recognize it until the early 1900’s.)  Ten
      days following that date were eliminated by the reformation, so the cal‐
      endar for that month is a bit unusual.


      A cal command appeared in Version 6 AT&T UNIX.
      Several much more elaborate versions of this program exist, with support
      for colors, holidays, birthdays, reminders and appointments, etc. For
      example, try the cal from
      or GNU gcal.


      The cal command is part of the util-linux-ng package and is available