It is ok; you could just try it out and check the file afterwards. If it looks ok, cat and the redirection must have done a good job.

Since this is nothing special to AIX think about posting such kind of question into one of the more appropriate forums next time please. No offense, but since this is a very basic question UNIX for Dummies Questions & Answers - The UNIX and Linux Forums would be a good choice for it next time.
If it goes deeper into shell scripting etc. you can also post in

Shell Programming and Scripting - The UNIX and Linux Forums
UNIX for Advanced & Expert Users - The UNIX and Linux Forums