add 10 days for UNIX timestamps output

Question

I've file contain many of epoch / UNIX timestamps need to add for example +10 days for output date so then I will get new date

and I've create bash script with date command but seems doesn't work

for i in `cat stamp.txt`; do date -d @$i "+10 days" '+%F %T' 

got error like

date: invalid option -- '1' Try `date --help' for more information. 

since if i run it for date of today is work

date -d "+10 days" is work 

also the convert is work

date -d @1469411110 '+%F %T' is work 

Answer 1

Try this

$ date -d @1469411110 Sun Jul 24 21:45:10 EDT 2016 $ date -d @1469411110 '+%F +T' 2016-07-24 21:34:36 EST 2016 $ date -d "$(date -d @1469411110)+10 days" Wed Aug 3 21:45:10 EDT 2016 $ date -d "$(date -d @1469411110)+10 days" +'%F %T' 2016-08-03 21-45-10