gcal

Displays calendar. More information: https://www.gnu.org/software/gcal.

• Display calendar for the current month:
  gcal
• Display calendar for the month of February of the year 2010:
  gcal {{2}} {{2010}}
• Provide calendar sheet with week numbers:
  gcal --with-week-number
• Change starting day of week to 1st day of the week (Monday):
  gcal --starting-day={{1}}
• Display the previous, current and next month surrounding today:
  gcal .