Linux get the time

Linux: Bash Get Time

[donotprint]

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	None
Est. reading time	1m

[/donotprint]

Syntax

To display current time, enter:

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You can only display time, enter:
$ date +»%T»
Sample outputs:

The following command use your local standards to display date and time:
$ date +»%c»
Sample outputs:

To display the date and time in a specified format, enter:
date +»%r %a %d %h %y (Julian Date: %j)»
Sample outputs:

A list of date command field descriptors

Finally, you can use TZ variable as follows. For example, show the time on the west coast of the US:
$ TZ=’America/Los_Angeles’ date
Sat Sep 19 12:26:57 PDT 2015

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Comments on this entry are closed.

And to set the time trought BASH, use this:

where
MM = Month (2 digits)
DD = Day (2 digits)
HH= Hours (24 hours format)
mm= Minutes (2 digits)
YYYY= Year (4 digits)

Example:
date 102712232010
Set the time to Wed Oct 27 12:23:00 CDT 2010

It’s not
$ date +”%T”

@soubhik — Your comment is inaccurate. Read more on the man page for /bin/sh or any shell.

Those commands that you posted, in this case, are equivalent. Read the section on quoting.

Setting a multi time zone clock on a corner of my desktop. Using NerdTool shell scripting. I have tried making use of the different time zone example on this page. Problem is Unless it is immediate close to local I get a default of several hours – not at all what I expected to get. Can anyone please tell me what I am doing wrong? Thanks.

TZ=’America/Hawaii’ date “+%H:%M %p”
TZ=’America/Los_Angeles’ date “+%H:%M %p”
TZ=’America/Denver’ date “+%H:%M %p”
TZ=’America/Dallas’ date “+%H:%M %p”
TZ=’America/Miami’ date “+%H:%M %p”

PS – I am not an expert in this, just trying examples out and doing my best to modify as the index reveals options. The example uses the dollar sign to precede the code but doing that kills the script in NerdTool.

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Display Date And Time In Linux

H ow do I display date and time in Linux using the command line and GUI options?

To display date and time under Linux operating system using command prompt use the date command. It can also display the current time / date in the given FORMAT. We can set the system date and time as root user too.

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	Linux with the terminal application
Est. reading time	3 minutes

Syntax

Open a terminal and type the following command:
date

You can format the date as follows in dd-mm-yy format:
date +»%d-%m-%y»

Simply display the current time:
date «+%T»

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To print the date of the day before yesterday, run:
date —date=’2 days ago’
Want to see the day of year of Christmas in the current year? Try:
date —date=’25 Dec’ +%j
Display the current full month name and the day of the month:
date ‘+%B %d’

Display date and time in Linux using the timedatectl

Most modern Linux distro with systemd use the timedatectl command. It is used to query and change the system clock and its settings, and enable or disable time synchronization services. All you have to do is type the following command:
$ timedatectl

TZ environment variable

The TZ environment tells Linux what time zone you are in. Many times when you want to change your time zone temporarily. For example, you might want to print the current date and time in “America/Los_Angeles” timezone even though you are in “Europe/London”. So we can set TZ, give a command like as follows when using TCSH/CSH:
setenv TZ timezone
For BASH/KSH/SH (see export command:
TZ=timezone; export TZ
Another option:
TZ=»America/Los_Angeles» date
TZ=»Asia/Tokyo» date
Use the following command to print a list of all timezones:
timedatectl list-timezones
timedatectl list-timezones | more
## filter out data using the grep command/egrep command ##
timedatectl list-timezones | grep -i Hong_kong
timedatectl list-timezones | grep -i paris
timedatectl list-timezones | grep -E -i ‘paris|london|kolkata’

The TZ Environment Variable on Linux

GUI Tool: Time Administration

The Time Administration Tool allows you to set the time, date and timezone of your system, as well as setting any time server to synchronize your local time server. Type the following command to start time admin tool:
sudo time-admin
## OR ##
time-admin

Fig.01: Linux Date and Time Administration Tool

How to change date and time settings with Gnome based Linux desktop

First, you need to Settings in Activities and then click Details in the sidebar. Make sure you click Date & Time in the sidebar to open the panel:

Conclusion

In this quick tutorial, you learned about the date command that you can use to see or change the date/time under Linux operating systems. We further explained how to use the GUI tools too. The date command has many more options. See man page by typing the following man command:
$ man date

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How To Get / Print Current Date in Unix / Linux Shell Script

H ow do I get the current date in Unix or Linux shell scripting and store it into a shell variable? How do I print the current date using Unix shell script? How can I display the current time in Linux shell script?

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	Linux or Unix
Est. reading time	3 minutes

You need to use the following syntax to print current date and time on screen:

Print current date and time in Unix shell script

To store current date and time to a variable, enter:
now=$(date)
OR
now=`date`

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Print Current Date in Unix

To print this date either use the printf or echo statement:
echo «$now»
echo «Current date: $now»
OR use the printf command:
printf «%s\n» «$now»
OR
printf «Current date and time in Linux %s\n» «$now»

Getting the current date and time in Linux shell script

You can format and display date using the following syntax:

Finding the current date and time in Linux or Unix using the date command

A list of date command format codes

FORMAT code	Description
%%	a literal %
%a	locale’s abbreviated weekday name (e.g., Sun)
%A	locale’s full weekday name (e.g., Sunday)
%b	locale’s abbreviated month name (e.g., Jan)
%B	locale’s full month name (e.g., January)
%c	locale’s date and time (e.g., Thu Mar 3 23:05:25 2005)
%C	century; like %Y, except omit last two digits (e.g., 20)
%d	day of month (e.g., 01)
%D	date; same as %m/%d/%y
%e	day of month, space padded; same as %_d
%F	full date; same as %Y-%m-%d
%g	last two digits of year of ISO week number (see %G)
%G	year of ISO week number (see %V); normally useful only with %V
%h	same as %b
%H	hour (00..23)
%I	hour (01..12)
%j	day of year (001..366)
%k	hour, space padded ( 0..23); same as %_H
%l	hour, space padded ( 1..12); same as %_I
%m	month (01..12)
%M	minute (00..59)
%n	a newline
%N	nanoseconds (000000000..999999999)
%p	locale’s equivalent of either AM or PM; blank if not known
%P	like %p, but lower case
%q	quarter of year (1..4)
%r	locale’s 12-hour clock time (e.g., 11:11:04 PM)
%R	24-hour hour and minute; same as %H:%M
%s	seconds since 1970-01-01 00:00:00 UTC
%S	second (00..60)
%t	a tab
%T	time; same as %H:%M:%S
%u	day of week (1..7); 1 is Monday
%U	week number of year, with Sunday as first day of week (00..53)
%V	ISO week number, with Monday as first day of week (01..53)
%w	day of week (0..6); 0 is Sunday
%W	week number of year, with Monday as first day of week (00..53)
%x	locale’s date representation (e.g., 12/31/99)
%X	locale’s time representation (e.g., 23:13:48)
%y	last two digits of year (00..99)
%Y	year
%z	+hhmm numeric time zone (e.g., -0400)
%:z	+hh:mm numeric time zone (e.g., -04:00)
%::z	+hh:mm:ss numeric time zone (e.g., -04:00:00)
%. z	numeric time zone with : to necessary precision (e.g., -04, +05:30)
%Z	alphabetic time zone abbreviation (e.g., EDT)

Sample shell script to display the current date and time

Conclusion

You learned how to display the current date and time on Linux and Unix-like systems. We also explained how to store date or time in a shell variable. For more info see date command man page by typing the following date command or GNU/date help page here:
man date

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