read the text file and print the content character by character..

hello all
i request you to give the solution for the following problem..
I want read the text file.and print the contents character by character..like if the text file contains google means..i want to print

g
go
goo
goog
googl
google

like this Using unix Shell scripting...
without using awk and perl commands i need the scripts...
please help me
thanks

Double post, continued here, thread closed.