cal - displays a calendar
cal [-jy] [[month] year]
cal displays a simple calendar. If arguments are not specified, the current
month is displayed.
The options are as follows:
-j Display Julian dates (days one-based, numbered from
-y Display a calendar for the current year.
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 January 1st.
The Gregorian Reformation is assumed to have occurred in
1752 after the
2nd of September. By this time, most countries had recognized the reformation
(although a few did not recognize it until the early
Eleven days following that date were eliminated by the reformation, so
the calendar for that month is a bit unusual.
The cal command offers a superset of IEEE Std 1003.2
A cal command appeared in Version 6 AT&T UNIX.
OpenBSD 3.6 April 28, 1995
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