Move a text into upper case letters

When you want to do text manipulation, you can use Sed and Awk. These 2 tools which come on most Linux distributions, will allow you to modify text files in many ways.

To move a text file into upper case letters, you can use Awk in the following way:

awk '{ print toupper($0) }' old_file > new_file

Sed and Awk are useful for a lot of other uses, and are integrated in several products.