Need to get the next day's date of the user entered date

UNIX AIX
1

I need to get the next day's date of the user entered date

for example:

Enter date (yyyy/mm/yy): 
2013/10/08

I need to get the next day's date of the user entered date

Desired Output:

2013/10/09

Though there are ways to achieve this is Linux or Unix environment (date command) ,I need to achieve this in AIX 6.1 version machine with ksh88.

2

Search for perderabos "datecalc" script here at this site. He was quite exhaustive in his date arithmetics and he does all that with standard Unix- and Shell-commands, not GNU-extensions.

I hope this helps.

bakunin