cal

- display a calendar

用法概要

cal [ [month] year]

描述

The cal utility writes a Gregorian calendar to standard output. If the year operand is specified, a calendar for that year is written. If no operands are specified, a calendar for the current month is written.

操作数

The following operands are supported:

month

Specify the month to be displayed, represented as a decimal integer from 1 (January) to 12 (December). The default is the current month.

year

Specify the year for which the calendar is displayed, represented as a decimal integer from 1 to 9999. The default is the current year.

环境变量

See environ(5) for descriptions of the following environment variables that affect the execution of cal: LANG, LC_ALL, LC_CTYPE, LC_TIME, LC_MESSAGES, and NLSPATH.

TZ

Determine the timezone used to calculate the value of the current month.

退出状态

The following exit values are returned:

0

Successful completion.

>0

An error occurred.

属性

See attributes(5) for descriptions of the following attributes:

另请参见

calendar(1), attributes(5), environ(5), standards(5)

附注

An unusual calendar is printed for September 1752. That is the month 11 days were skipped to make up for lack of leap year adjustments. To see this calendar, type:

cal 9 1752

The command cal 83 refers to the year 83, not 1983.

The year is always considered to start in January.