Add X days from today in Command Line

If you want to calculate say add 30 days from today in Command Line, you can make use of the date command (this will work on Linux based OS)

When you use the date command, you get the current date and time in the timezone that you are located in.

# date

Fri Mar 18 12:12:21 PDT 2022

Now in order to add 30 days to the current date, add -d parameter followed by "+30 days" in double quotes,

# date -d "+30 days"

Sun Apr 17 112:12:25 PDT 2022

As you can see the result that we get is the date that is 30 days after the current date.