What is cal command in linux ??

LINUX cal command examples
cal utility is used to display calendar of any specific month or year.  Below are few examples for linux cal command usage.
Display calendar of any specific year
Display calendar of current month
Display calendar of any specific month in current year
Display calendar of any specific month in any specific year
Display Julian calendar of current year
Display Julian calendar of any specific year
Display Julian calendar of any specific month
Display Julian calendar of any specific month in any specific year
Display calendar without high lighting current date
Display previous, current and next month calendar highlighting current date
Display previous, current and next month calendar without highlighting current date
Display previous, current and next month in Julian calendar highlighting current date
Display previous, current and next month in Julian calendar without highlighting current date
Display calendar of given month in following year
Display calendar of given month in previous year

LINUX cal command examples:
Display calendar of any specific year
cal   -y   <year>
cal  <year>

jp@jp-VirtualBox:~$ cal 2016
                             2016

      January               February               March
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
                1  2      1  2  3  4  5  6         1  2  3  4  5
3  4  5  6  7  8  9   7  8  9 10 11 12 13   6  7  8  9 10 11 12
10 11 12 13 14 15 16  14 15 16 17 18 19 20  13 14 15 16 17 18 19
17 18 19 20 21 22 23  21 22 23 24 25 26 27  20 21 22 23 24 25 26
24 25 26 27 28 29 30  28 29                 27 28 29 30 31
31                                         
       April                  May                   June
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
                1  2   1  2  3  4  5  6  7            1  2  3  4
3  4  5  6  7  8  9   8  9 10 11 12 13 14   5  6  7  8  9 10 11
10 11 12 13 14 15 16  15 16 17 18 19 20 21  12 13 14 15 16 17 18
17 18 19 20 21 22 23  22 23 24 25 26 27 28  19 20 21 22 23 24 25
24 25 26 27 28 29 30  29 30 31              26 27 28 29 30
                                           
        July                 August              September
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
                1  2      1  2  3  4  5  6               1  2  3
3  4  5  6  7  8  9   7  8  9 10 11 12 13   4  5  6  7  8  9 10
10 11 12 13 14 15 16  14 15 16 17 18 19 20  11 12 13 14 15 16 17
17 18 19 20 21 22 23  21 22 23 24 25 26 27  18 19 20 21 22 23 24
24 25 26 27 28 29 30  28 29 30 31           25 26 27 28 29 30
31                                         
      October               November              December
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
                   1         1  2  3  4  5               1  2  3
2  3  4  5  6  7  8   6  7  8  9 10 11 12   4  5  6  7  8  9 10
9 10 11 12 13 14 15  13 14 15 16 17 18 19  11 12 13 14 15 16 17
16 17 18 19 20 21 22  20 21 22 23 24 25 26  18 19 20 21 22 23 24
23 24 25 26 27 28 29  27 28 29 30           25 26 27 28 29 30 31
30 31                                      

Display calendar of current month
cal

jp@jp-VirtualBox:~$ cal
   February 2016
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 29

Display calendar of any specific month in current year
jp@jp-VirtualBox:~$ cal -m 4
     April 2016
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 29 30

Display calendar of any specific month in any specific year
jp@jp-VirtualBox:~$ cal 10 2010
    October 2010
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 29 30
31

Display Julian calendar of any specific year
jp@jp-VirtualBox:~$ cal -j 2016
                          2016

          January                     February
Su  Mo  Tu  We  Th  Fr  Sa   Su  Mo

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