Dates

We can save the current time by using -v and specifying the variable name. To save the current time in a variable cdate and print it, we can do the following:

$ printf -v cdate '%(%F)T' -1
$ echo $cdate

date +"%m-%d-%y"

To convert the year into a four-digit, change y to Y.

$ date +"%m-%d-%Y"

To add N days in the date, we use the following command:

date -d="YYYY-MM-DD+N days"
Let’s look at an example.

$ date -d "2021-12-21+20 days"
Output:

Mon 10 Jan 2022 12:00:00 AM