Command to display previous,current,next month of Cal of year 2015 dec

Question

I know how to display the previous, current ,next Month of ongoing current month .but I didn't know for the particular year mentioned...what is the command used in Unix to get the output

Solution

$ cal -A1 -B1 12 2015
   November 2015         December 2015          January 2016      
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  
 1  2  3  4  5  6  7         1  2  3  4  5                  1  2  
 8  9 10 11 12 13 14   6  7  8  9 10 11 12   3  4  5  6  7  8  9  
15 16 17 18 19 20 21  13 14 15 16 17 18 19  10 11 12 13 14 15 16  
22 23 24 25 26 27 28  20 21 22 23 24 25 26  17 18 19 20 21 22 23  
29 30                 27 28 29 30 31        24 25 26 27 28 29 30  
                                            31                    

Comments

[Jetchisel]

That is BSD cal, I assume, since GNU cal errors out with cal: invalid option -- 'A'

[JdeBP]

It is FreeBSD ncal, which is also the cal in Debian 10.