For details of in-depth For example: outputs: 24c09c2020, if you wanted to use 'c' as a delimiter for some reason.

Note, however, that combining a date and things like "next Monday" does not work.

Summary The root user can set the system time and date using the date command. Plus, the fact that it can also be used while dealing with multiple geographic locations makes it an important command line tool. Check out these practical examples. Print the current date and time in the format required by many Don't know how to make a proper code section in that comment so formating will probably be crap. Get your subscription here. utmp(5),  $ date -d=1may '+%B %-d'

Suppose you had not specified time zone information in the example above. ctime_r(3),  ^ use upper case if possible But before we do that, it's worth mentioning that all commands and instructions mentioned here have been tested on Ubuntu 16.04 LTS.eval(ez_write_tag([[580,400],'howtoforge_com-medrectangle-3','ezslot_5',121,'0','0'])); Here's the generic syntax of the date command: And here's what the tool's man page says about it: The following Q&A-style examples should give you a good idea of how this command works.

For those who aren't sure what sudo is, head here. posix_spawn(3), 

While working on the Linux command line, you might find yourself in situations where-in you need to display (or even change) the current system time. NOTE: The available options that you can use as STRINGS are already explained in Q2 above. So now that you've seen the basics of doing date math, let's use it to do something. 946706400 You must run command as root user.

And, the right after the flag -d, you type the date you want to identify. gawk(1),  The input to the -d/--date option can be of different types. The - and _ are GNU extensions.

Here's an example of how we used the -s option to set date and time of our system: Please note that you may have to use 'sudo' for the -s option to work. a option: This option helps us to display all the available intro manual pages in succession. time(2),  If given an argument that starts with a +, date prints the Here's an example:Advertisement.large-leaderboard-2{text-align:center; padding-top:10px !important;padding-bottom:10px !important;padding-left:0px !important;padding-right:0px !important;width:100% !important;box-sizing:border-box !important;background-color:#eeeeee !important;border: 1px solid #dfdfdf}eval(ez_write_tag([[250,250],'howtoforge_com-large-leaderboard-2','ezslot_19',112,'0','0']));.large-leaderboard-2{text-align:center; padding-top:10px !important;padding-bottom:10px !important;padding-left:0px !important;padding-right:0px !important;width:100% !important;box-sizing:border-box !important;background-color:#eeeeee !important;border: 1px solid #dfdfdf}eval(ez_write_tag([[250,250],'howtoforge_com-large-leaderboard-2','ezslot_20',112,'0','1'])); To set the system date/time to a different value, use the -s command line option. And, the format lets you control the output by adding your own string and specify the values you want in the output. clock_getres(2), 

GNU date recognizes the following modifiers between % and a numeric directive. author of

$ date '+%B %d' cal - Display a calendar. system clock to the time and date specified by that argument (as current time and date (or the time and date specified by the --date option, see below) in the format defined by that argument, which is the times - User and system times. When you refer to the information for the date command using date –help in the terminal, you will find all the important sequences that you can combine to make use of the date command in more ways than mentioned in this article. So, you can use "next Monday" or "last Friday". WARNING! should give you access to the complete manual. Another interesting use of the date command is calculating the time in seconds since epoch time or Unix time. To start with, you just need to enter the command “date” … maintainer of the Just type the date command: $ date Sample outputs: Mon Jan 21 01:31:40 IST 2019 Linux Display The Hardware Clock (RTC) Print the day of year of Christmas in the current year:

Interpreted sequences are: By default, date pads numeric fields with zeroes. Print a date without the leading zero for one-digit days of the month, you can use the (GNU extension) '-' modifier to suppress the padding altogether.

(adsbygoogle = window.adsbygoogle || []).push({}); $ STAMPME=$HOME/demo_file_$(date +%Y%m%d-%H%M).txt, $ date --date='2000-01-01 00:00:01 UTC +5 hours' +%s, $ date -d '1970-01-01 946684800 sec' +"%Y-%m-%d %T %z". Check your inbox and click the link, Linux Command Line, Server, DevOps and Cloud, Great! gmtime(3), 

asctime_r(3),  if you want to just display the current time in Linux, use this: Another example of the command to show the control over output format: In the command above, I added a string after + inside the inverted commas and then pass some pre-built sequences like %A or %B to control what you want to display. The manual page associated with each of these arguments is then found and displayed.

Here is an example illustrating the differences: Here are the same format codes in categories: If given an argument that does not start with +, date sets the alternate numeric symbols if available.

Suppose, you have a specific date but you want to display the weekday for that date, you need to specify the date using the -d flag as: It is worth noting that the format for the input is YYYY-MM-DD.

## Timezones are sorted by their UTC offsets.## Timezones with the same UTC offset than the current timezone# are marked with '*'## However, they will be marked with '?' Then, date would have used your computer's idea of FORMAT controls the output. For example, the requirement could be to know the date for 'next Tuesday'. Display the current date and time in Linux. The date(1) man page has a bit more information about the types of date strings you can specify, however, the GNU Info date page has much more complete documentation.. You can also try specifying a point of time since the epoch time to calculate the number of seconds elapsed. Linux Display Current Date and Time.

The following screenshot shows this option in action: Similarly, you can use the --rfc-2822 option to display output in that format.

Q8. Find all directories whose name is Tecmint in / directory. Here’s how it looks with the input and output: As you can see, it also shows the time zone along with the system time. gmtime_r(3),  date 10250045. mktime(3),  $ date --date='25 Dec' +%j In this article, we take a look at the date command in detail and what you can do with it using some examples. printf "%s %c%-17s %s\n" "$UTC2" "$M" "$loc" "$A"     done  | sort -n | cut -c 7-}, For those that are interested, I dropped the file in http://www.chauveau-central.net/pub/tz.bash. The following command outputs the number of the seconds since the epoch for the time one second later than the epoch, but in time zone five hours later (Cambridge,Massachusetts), thus a total of five hours and one second after How to Display the Date and Time Using Linux Command Line Use format characters to display the date and time with precision. Print the date in the format specified by RFC-822 (day month year hh:mm:ss zzz), use

You can also put the day name if you want. Q6.

These examples may not work on Linux computer i.e. Print the date of the day before yesterday: locale(5),  fi        else            M=" "        fi        A=$(LC_ALL=C TZ="$tz" date -d "@$T" +"%a %b %d %H:%M (UTC%:z) %4Z $tz")        # Prefix each output line with its numeric timezone.

pmdate(1),  And here's the output it produced: 2017-06-27T14:20:39+05:30 Q4. Example: 2006-08-14T02:34:56-06:00 -R, --rfc-email output date and time in RFC 5322 format. It is worth checking out the manual page for the date command using the following command: Gary Newell was a freelance contributor, application developer, and software tester with 20+ years in IT, working on Linux, UNIX, and Windows. How to get date corresponding to a day? $ date --date='2 days ago' View the UTC date for your computer using the following command: If you are in the UK you will notice that instead of showing "18:58:20" as the time it will show "17:58:20" as the time. timezone(3),  Print the current full month name and the day of the month: format of the %c directive (described below). However, if you want to utilize the date command through the terminal, you can do it by typing the following command: When you type this command, it will set the time to December 2nd, 2019 at 12:00 PM as the time. DATE(1) User Commands DATE(1), GNU coreutils 8.32 March 2020 DATE(1), https://www.gnu.org/software/coreutils/date.

HTML rendering created 2020-09-19 After any flags comes an optional field width, as a decimal number;

$ date -d '1970-01-01 946684800 sec' +"%Y-%m-%d %T %z" The date command is fundamental to understanding time options on Linux. Options The date …

The following optional flags may follow '%': After any flags comes an optional field width, as a decimal number; then an optional modifier, which is either E to use the locale's alternate For example, I tested the following command: date --iso-8601=seconds. So far, none of our examples go beyond displaying the date, leaving the actual date and time unchanged. How to display date/time information in ISO 8601 format?

Like the option discussed in the previous section, this one also requires you to enter a format specifier. You'll be glad to know that this is also possible using the 'date' command.eval(ez_write_tag([[250,250],'howtoforge_com-medrectangle-4','ezslot_7',108,'0','0']));eval(ez_write_tag([[250,250],'howtoforge_com-medrectangle-4','ezslot_8',108,'0','1'])); The -d or --date command line option would be of help in this case: So, as you can see, the command revealed that next Tuesday is July 4.

timedatectl(1), 

instead if the UTC offset # of the current time (now) and of the specified time are not equal # This usually indicates a summer/winter time change.

The default action i… Q1. If you have any questions or feedback, feel free to leave a comment. settimeofday(2), 

Example: 2006-08-14T02:34:56-0600. [cherisim@putor ~]$ date -d "8/16/2003" Sat 16 Aug 2003 12:00:00 AM EDT Using the Date Command to Set the System Date and Time. the epoch: Using the same command you can find out which day of the week your birthday or Christmas falls upon. rtcwake(8). rtc(4),  Example: Mon, 07 Aug 2006 12:34:56 -0600--rfc-3339=TIMESPEC output date and time in RFC 3339 format.

The --date and --set options can not be used with such an argument. --rfc

For example, the panel clock in Xfce4 supports using the standard date options to customize the date and time display. To know your system's date and time, all you have to do is to run the tool in the following way (yeah, sans any option):(adsbygoogle = window.adsbygoogle || []).push({}); So you can see that information like day, date, time, time zone, as well as year was displayed in output. locale(1), 

gettimeofday(2),  # See in tzselect or in /usr/share/zoneinfo/ for the values    LOCATIONS["Californie"]="US/Pacific"   # PST/PDT    LOCATIONS["Texas"]="US/Central"        # PST/PDT    LOCATIONS["New York"]="US/Eastern"     # EST/EDT    LOCATIONS["UK"]="Europe/London"        # GMT/BST    LOCATIONS["France"]="Europe/Paris"     # CET/CEST     LOCATIONS["Moscou"]="Europe/Moscow"    # MSK    LOCATIONS["Inde"]="Asia/Calcutta"      # IST (India Standard Time )     LOCATIONS["Japan"]="Asia/Tokio"        # JST     # Get current timezone now (in $UTC0) and at requested time (in $UTC1)    # They may be different because of summer/winter time changes. localtime_r(3), 



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