How to obtain the time of yesterday or tomorrow in Centos

The date command can get the current time. man shows that many parameters of date can be used, which is easy to format. for example: date + "% F" output format: 2011-12-31date + "% F % H: % M: % S" output format: 2011-12-3116: 29: 50. the current time of the system is printed, if you want to obtain a time relative to the current time, you can use the-d parameter. Example: date-d "tomorrow"

The date command can get the current time. man shows that many parameters of date can be used, which is easy to format. for example:

Date + "% F" output format: 2011-12-31date + "% F % H: % M: % S" output format: 2011-12-31 16:29:50

This is to print the current time of the system. if you want to obtain a time relative to the current time, you can use the-d parameter. For example:

Date-d "tomorrow" + "% F % H: % M: % S" output date-d "yesterday" + "% F % H: % M: % S "output the time at this time yesterday

If I want to get the time of 13 days ago, the-d parameter has more flexible usage, for example:

Date-d "-1 day ago" + "% F % H: % M: % S "output date-d" 1 day ago "+" % F % H: % M: % S "output date-d" 1 week ago "+" % F % H: % M: % S "output time seven days ago, equivalent to date-d "7 day ago" + "% F % H: % M: % S"

We can see that ago is powerful. The first number can be a negative number, and the negative number indicates the future time. the positive number indicates the past time, the second parameter is minute, hour, day, month, and week.