cal
Displays a calendar
cal [[month] year]
The cal utility displays a calendar for a month or year.
Arguments
The arguments specify the month and year for which cal displays a calendar. The month is a decimal integer from 1 to 12, and the year is a decimal integer. Without any arguments cal displays a calendar for the current month. When you specify a single argument, it is taken to be the year.
Options
-j
Julian Displays a Julian calendar: a calendar that numbers the days consecutively from January 1 (1) through December 31 (365 or 366). See the second example.
-m
Monday Makes Monday the first day of the week. Without this option, Sunday is the first day of the week.
-y
year Displays a calendar for the current year.
Notes
Do not abbreviate ...
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