There are several formats of Shell dates under Linux
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In the Shell environment, our command to get time is date, but the format and content of the time and date from date may not be what we want, so we may need to format it.
The common time domains are as follows:
% Y year (for example, 1970, 2015, 2018, etc.)
% m month (01.. 12)
% d the day ordinal of a month (01.. 31)
% H hours (00.23)
% M points (00.59)
% s seconds (00.59)
Use the date command with no arguments to get the current time and date. The result is usually the time in the CST standard format.
[alvin@VM_0_16_centos ~] $date Sat Nov 3 22:01:57 CST 2018
To get a specific in a specific format, the command is: date + 'format',. Note that this is case-sensitive.
[alvin@VM_0_16_centos ~] $date +'% Ymuri% mmi% d' 2018-11-03 [alvin@VM_0_16_centos ~] $date +'% Y/%m/%d% H15% MRO% S' 22:08:14 on 2018-11-03
Get yesterday's date. You can add the-d option to the above command.
[alvin@VM_0_16_centos ~] $date-d 'yesterday' +'% Y/%m/%d% HV% MV% S' 2018-11-02 22:24:31 or [alvin@VM_0_16_centos ~] $date-d 'today-1 day' +'% YMY% MMI% d' 2018-11-04
Get an hour before the current time
[alvin@VM_0_16_centos ~] $date-d'today-1 hour' +'% Y% m% d% H' 2018110414 or [alvin@VM_0_16_centos ~] $date +'% Y-%m-%d% HV% MV% S'-d'- 1 hours' 2018-11-0414: 43:38
Gets the day before the specified date. This is actually asking for relative time. For example, the following asks for the date of the day before the National Day:
[alvin@VM_0_16_centos ~] $date-d' 20181001-1 day' +'% Y% m% d' 20180930
Convert a date to a timestamp:
[alvin@VM_0_16_centos ~] $date-d "Nov 4 15:49:41 CST 2018" +% s 1541317781
Convert the timestamp back to the date:
[alvin@VM_0_16_centos] $date-d @ 1541317781 Sun Nov 4 15:49:41 CST 2018
Convert the timestamp to a date and display it in a specific format:
[alvin@VM_0_16_centos ~] $date-d @ 1541317781 +'% Y%m%d% HVA% MVD% S' 20181104 above 15:49:41 is all the contents of this article entitled "there are several Shell date formats under Linux". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!
