How to write a shell script where to add days month and year to current date
Tip: fire up a terminal(in my case bash terminal)
the help is a good starting point
date --helpor man page
man dateA lot of information and examples.
Date manipulation in bash (copy paste the example run in your terminal):
add 10 days to the current date:
date -d "10 day" +"%Y %m %d"or remove 10 days to the current date
date -d "-10 day" +"%Y %m %d"add 2 months to the current date:
date -d "2 month" +"%Y %m %d"remove 2 months from the current date:
date -d "-2 month" +"%Y %m %d"add 1 year to the current date
date -d "1 year" +"%Y %m %d"remove 1 year to the current date
date -d "-1 year" +"%Y %m %d"mixing add 1 year month and day
date -d "1 year 1 month 1 day" +"%Y %m %d"in a script (in my case bash)
foobaa=`date -d "1 year 1 month 1 day" +"%Y %m %d"`echo $foobaaI hope it helps a little..
Simple command in short is
date -d "+3 days +4 Month +2 Years"
Similarly, you can also subtract dates too.
date -d "-3 days -4 Month -2 Years"