How to calculate the date of Easter celebrations in the Linux terminal

How to calculate the date of Easter celebrations in the Linux terminal
 

The terminals use a large number of all sorts of built-in commands (utilities). Built-in – this is the team that are present by default in the list of terminal commands any Linux distribution Linux .
In this article I want to tell you about one of them, which displays in the terminal calendar data in various forms – a utility cal or ncal
<. a name = "more" /> In principle, the utility cal and ncal are doing the same thing – a simple calendar display. If no arguments are given, it displays the calendar for the current month, with the only difference that the team cal displays the default calendar for the current month in the horizontal position, and the team ncal – in . vertical

cal

ncal

Now let’s look at the possibility of using two calendars with various additional arguments. To do this, execute the command cal -w :

As seen in the picture, have the utility ncal more possibilities for use. In particular, the ncal You can use the argument -e and – o , which determine the date of the celebration of Easter
As you know, there are Orthodox and Catholic Easter .
To calculate Catholic Easter use the argument -e , and for Orthodox argument – o . Default date Easter displays the current year

. The Catholic Easter

ncal -e

Orthodox Easter

ncal -o

As seen in the pictures, Catholic Easter will be held this Sunday (27 March), and Orthodox -. 1 May

to calculate the date of Easter for the following years, it is necessary in each of the commands to add the desired year. For example:

Orthodox in 2017

ncal -o 2017

Catholic in 2017

ncal -e 2017

As you can see from the command output, the following year the celebration of the day Pahi is the same for Orthodox and Catholics – 16 April

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