Published Book on Amazon
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All of IOT Starting with the Latest Raspberry Pi from Beginner to Advanced – Volume 1 |
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All of IOT Starting with the Latest Raspberry Pi from Beginner to Advanced – Volume 2 |
출판된 한글판 도서
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최신 라즈베리파이(Raspberry Pi)로 시작하는 사물인터넷(IOT)의 모든 것 – 초보에서 고급까지 (상) |
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최신 라즈베리파이(Raspberry Pi)로 시작하는 사물인터넷(IOT)의 모든 것 – 초보에서 고급까지 (하) |
Original Book Contents
10.10.2 "cal" Command and "ncal" Command
This command performs the function to print the calendar. While the "cal" command shows it in the traditional calendar format with a simpler type, the "ncal" command can display it in a variety of formats and use various options.
The following describes the usage format for the "cal" command.
[Command Format]
| cal [-3hjy] [-A number] [-B number] [[month] year] cal [-3hj] [-A number] [-B number] -m month [year] |
The following describes the usage format for the "ncal" command.
[Command Format]
| ncal [-3bhjJpwySM] [-A number] [-B number] [-s country_code] [[month] year] ncal [-3bhJeoSM] [-A number] [-B number] [year] ncal [-CN] [-H yyyy-mm-dd] [-d yyyy-mm] |
[Command Overview]
■ This prints the calendar of the specified date.
■ User privilege -- Normal user.
[Detail Description]
■ None
[Main Option]
| -J | Display Julian Calendar, if combined with the -o option, display date of Orthodox Easter according to the Julian Calendar. |
| -e | Display date of Easter (for western churches). |
| -m month
| Display the specified month. If month is specified as a decimal number, appending ‘f’ or ‘p’ displays the same month of the following or previous year respectively. |
| -w | Print the number of the week below each week column. |
| -y | Display a calendar for the specified year. This option is implied when a year but no month are specified on the command line. |
| -3 | Display the previous, current and next month surrounding today. |
| -1 | Display only the current month. This is the default. Manual page cal(1) line 19 (press h for help or q to quit) |
| -d yyyy-mm | Use yyyy-mm as the current date (for debugging of date selection). |
| -H yyyy-mm-dd | Use yyyy-mm-dd as the current date (for debugging of highlighting). |
[Used Example]
The following prints the current month's calendar.
| pi@raspberrypi ~ $ cal |
| June 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 |
The following example prints the calendar for August 2015.
| pi@raspberrypi ~ $ cal -d 2015-08 |
| August 2015 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 |