Dateutils time unit, very useful.
Remember to reference this unit, otherwise it cannot be used.
Comparedate: Compare the size of the date part of two date and time valuesComparedatetime compares the sizes of two datetime valuesComparetime: Compare
When I used to solve this problem with ASP is quite simple, the ASP has the corresponding function DateDiff can give two days period interval How many months, how many days and how many seconds. When I searched through the PHP manual I found that
Use the function date () to implement the displayed in the format: year-month-day hours: minutes: secRelated Time parameters:A-"AM" or "PM"A-"AM" or "PM"D-A few days, two digits, if less than two digits before the 0; such as: "01" to "31"D-Days of
Date--helpUsage: date [options] ... [+ format]Or: Date [-u|--utc|--universal] [MMDDHHMM[[CC]YY][.SS]]Displays the current time in the given format, or sets the system date.-D,--date= string displays the time described by the specified string, not
This article contains the following elements:
1, get the current date and time-how many ways do we have?
2, change the date display mode-date and time display form
3, the conversion of the current date is a Unix timestamp value
4. Change Date
A.
Get the date of the dayDate +%y-%m-%dOutput: 2011-07-28Assigns the current date to a date variabledate=$ (Date +%y%m%d)Sometimes we need to use dates before or after today, so we can use the-D parameter of dateGet Tomorrow's dateDate-d Next-day
The direct subtraction of functions is not correct, you need to do this:
* * Get the current date and time
In Unix, time is represented by the number of seconds that have elapsed since 0 o'clock January 1, 1970, which is called the Unix timestamp (
Originally want to use batch processing, think of time is too troublesome ...
Immediately install PowerShell look at the help document, which has an example:
The following command looks up the last modified date in the Program Files folder later
Introduction
On the computerProgramIt is difficult to accurately process the date in. Not only are there obvious (English: January, French: Janvier, German: Januar, etc.) Internationalization requirements, different date systems must also be
1) What is "last-modified"?When the browser requests a URL for the first time, the server-side return status is 200, the content is the resource you requested, and there is a last-modified attribute that marks the last time the file was modified at
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