cal - Displays a calendar
cal [month [year]]
Interfaces documented on this reference page conform to industry standards
Refer to the standards(5) reference page for more information about indus-
try standards and associated tags.
Names the month for which you want the calendar. It can be a number
between 1 and 12 for January through December, respectively. If month
is not specified, cal displays a calendar for the entire year, unless
year is also omitted.
Names the year for which you want the calendar. Because cal can display
a calendar for any year from 1 to 9999, enter the full year rather than
just the last two digits. If year is not specified, cal uses the
If no operands are specified, cal displays a calendar for the current
The cal command writes to standard output a Gregorian calendar for the
specified year or month.
For historical reasons, the cal command's Gregorian calendar is discontinu-
ous. The display for September 1752 (cal 9 1752) jumps from Wednesday the
2nd to Thursday the 14th.
The cal command checks the LC_TIME environment variable and uses the
correct headers for the current locale. If LC_TIME is not set, cal checks
the value of LANG. If neither variable is set, you receive English headers.
The following exit values are returned:
0 Successful completion.
>>0 An error occurred.
1. To display a calendar for February 1990, enter:
cal 2 1990
2. To display a calendar for the year 84 A.D., enter:
3. To display a calendar for the current month, enter:
The following environment variables affect the execution of *cmd*:
Provides a default value for the internationalization variables that
are unset or null. If LANG is unset or null, the corresponding value
from the default locale is used. If any of the internationalization
variables contain an invalid setting, the utility behaves as if none of
the variables had been defined.
If set to a non-empty string value, overrides the values of all the
other internationalization variables.
Determines the locale for the interpretation of sequences of bytes of
text data as characters (for example, single-byte as opposed to multi-
byte characters in arguments).
Determines the locale for the format and contents of diagnostic mes-
sages written to standard error.
Determines the format and contents of the calendar.
Determines the location of message catalogues for the processing of
TZ Determines the time zone used to calculate the value of the current
Command and Shell User's Guide