CAL
Section: User Commands (1)
Index
BSD mandoc
  
NAME
cal ncal - displays a calendar and the date of Easter   
SYNOPSIS
[-hjy ] [[month ] year ]
[-hj ] -m month [year ]
ncal [-hjJpwy3MS ] [-s country_code ] [[month ] year ]
ncal [-hJeo ] [year ]   
DESCRIPTION
The utility displays a simple calendar in traditional format and ncal offers an alternative layout, more options and the date of Easter. The new format is a little cramped but it makes a year fit on a 25x80 terminal. If arguments are not specified, the current month is displayed.
The options are as follows:


-3
Print the previous month, the current month, and the next month all on one row.
-h
Turns off highlighting of today.
-J
Display Julian Calendar, if combined with the -e option, display date of Easter according to the Julian Calendar.
-e
Display date of Easter (for western churches).
-j
Display Julian days (days one-based, numbered from January 1).
-m month
Display the specified month If month is specified as a decimal number, it may be followed by the letter `f' or `p' to indicate the following or preceding month of that number, respectively.
-o
Display date of Orthodox Easter (Greek and Russian Orthodox Churches).
-p
Print the country codes and switching days from Julian to Gregorian Calendar as they are assumed by ncal The country code as determined from the local environment is marked with an asterisk.
-s country_code
Assume the switch from Julian to Gregorian Calendar at the date associated with the country_code If not specified, ncal tries to guess the switch date from the local environment or falls back to September 2, 1752. This was when Great Britain and her colonies switched to the Gregorian Calendar.
-w
Print the number of the week below each week column.
-y
Display a calendar for the specified year.
-M
Weeks start on Monday.
-S
Weeks start on Sunday.

A single parameter specifies the year (1-9999) to be displayed; note the year must be fully specified:


 will not display a calendar for 1989. Two parameters denote the month and year; the month is either a number between 1 and 12, or a full or abbreviated name as specified by the current locale. Month and year default to those of the current system clock and time zone (so

 will display a calendar for the month of August in the current year).
A year starts on January 1.   

SEE ALSO
calendar(3), strftime(3)   
HISTORY
A command appeared in AT&T System v5 . The ncal command appeared in Fx 2.2.6 . The output of the cal command is supposed to be bit for bit compatible to the original Unix cal command, because its output is processed by other programs like CGI scripts, that should not be broken. Therefore it will always output 8 lines, even if only 7 contain data. This extra blank line also appears with the original cal command, at least on solaris 8   
AUTHORS
The ncal command and manual were written by An Wolfgang Helbig Aq helbig@ .   
BUGS
The assignment of Julian-Gregorian switching dates to country codes is historically naive for many countries.


--------------------------------------------------------------------------------
 
Index
NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
HISTORY
AUTHORS
BUGS

求源代码

这什么 看不懂

课程设计的题，完全不懂，