Adrian SieberThis is my first post in the Command Line Monday series. It gives a short introduction to a useful command line tool every Monday. cal is part of the Single UNIX Specification and is should therefore be installed on every unix-like operating system. The official manual of cal in the unix specification defines only 3 commands: $ cal May 2016 Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
