cal

Package: bsdmainutils.

Generate an ASCII art calendar:

cal

Sample output:

February 2015
Su Mo Tu We Th Fr Sa
1  2  3  4  5  6  7
8  9  10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28

with the current day in bold.