You can use the "TZ" variable and modify it. Note the difference in the output of these commands (try them out):
"date" calculates the date/time from the systems clock (which runs in UTC - Universal Time Coordinated) by applying the timezone as a modificator. Therefore, by modifying the timezone information, you can do date arithmetics. Because "TZ" is a variable like any other (it is set in "/etc/environment") you can simply modify it in a subshell without any consequences outside (therefore "(...)" ).
I Have a long file like this
123122312 05/06/12
123123456 05/06/14
I want to take the difference of dates in two lines & print difference sidewise for the whole long files.
Pl help me out. (1 Reply)
I have the script which appends month and year to the name of the
file. Now every time when I append the month-year combination I
have to subtract 2 months from the current date and then append
it, since we are sending our vendor 2 months prior worth of data
eveytime.
#! /usr/bin/ksh
... (5 Replies)
Hi,
I have one .csv file. I have 2 date columns present in file, column 2 and column 3.
I need to calculate how many days exist between 2 dates.
I am trying to subtract date column 2 from date column 3.
Eg: my file look likes
s.no, Start_date,End_Date
1, 7/29/2012,10/27/2012
2,... (9 Replies)
Hi,
Can you please let me know code for the below (in korn shell)
a) Subtract month(s) from given date
b) Subtract day(s) from give date
c) Subtract month(s) from given timestamp
d) Subtract day(s) from give timestamp (1 Reply)
Hi,
I am running on Solaris 11.3.
I have a timestamp in this format date +%Y%m%d%H%M .
I found some forums saying to use date --d however that didn't work.
Is there a way how I can subtract days from timestamp in that format?
Thanks (12 Replies)
Hi all,
I have been researching to obtain SSL certification expiry for most of our webistes. For some cases, some hosts where not directly accessible so i finally got a solution working with curl using my proxy. This lists the expiry date which i'm finally looking for.
# curl --proxy... (4 Replies)
SunOS -s 5.10 Generic_147440-04 sun4u sparc SUNW,SPARC-Enterprise
Hi,
In a folder, there are files. I have a script which reads the current date and subtract the modification date of each file.
How do I achieve this?
Regards,
Joe (2 Replies)
current date command runs well
awk -v t="$(date +%Y-%m-%d)" -F "'" '$1 < t' myname.dat
subtract 30 days fails
awk -v t="$(date --date="-30days" +%Y-%m-%d)" -F "'" '$1 < t' myname.dat
awk command in hp unix subtract 30 days automatically from current date without date illegal option error... (20 Replies)
Discussion started by: kmarcus
20 Replies
LEARN ABOUT PHP
date_default_timezone_get
DATE_DEFAULT_TIMEZONE_GET(3) 1 DATE_DEFAULT_TIMEZONE_GET(3)date_default_timezone_get - Gets the default timezone used by all date/time functions in a script
SYNOPSIS
string date_default_timezone_get (void )
DESCRIPTION
In order of preference, this function returns the default timezone by:
o Reading the timezone set using the date_default_timezone_set(3) function (if any)
o Prior to PHP 5.4.0
only: Reading the $TZ environment variable (if non empty)
o Reading the value of the date.timezone ini option (if set)
o Prior to PHP 5.4.0
only: Querying the host operating system (if supported and allowed by the OS). This uses an algorithm that has to guess the time-
zone. This is by no means going to work correctly for every situation. A warning is shown when this stage is reached. Do not rely
on it to be guessed correctly, and set date.timezone to the correct timezone instead.
If none of the above succeed, date_default_timezone_get will return a default timezone of UTC.
RETURN VALUES
Returns a string.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.4.0 | |
| | |
| | The TZ environment variable is no longer used to |
| | guess the timezone. |
| | |
| 5.4.0 | |
| | |
| | The timezone is no longer guessed from informa- |
| | tion available through the operating system as |
| | the guessed timezone can not be relied on. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
Getting the default timezone
<?php
date_default_timezone_set('Europe/London');
if (date_default_timezone_get()) {
echo 'date_default_timezone_set: ' . date_default_timezone_get() . '<br />';
}
if (ini_get('date.timezone')) {
echo 'date.timezone: ' . ini_get('date.timezone');
}
?>
The above example will output something similar to:
date_default_timezone_set: Europe/London
date.timezone: Europe/London
Example #2
Getting the abbreviation of a timezone
<?php
date_default_timezone_set('America/Los_Angeles');
echo date_default_timezone_get() . ' => ' . date('e') . ' => ' . date('T');
?>
The above example will output:
America/Los_Angeles => America/Los_Angeles => PST
SEE ALSO date_default_timezone_set(3), "List of Supported Timezones".
PHP Documentation Group DATE_DEFAULT_TIMEZONE_GET(3)