Are you asking:
1. How do I create a prompt string that uses >
or
2. I have a > on my screen, what do I do?
For question number 1, you can assign the variable PS1 the string you'd like to use, something like this:
PS1="> "
For question number 2, this means that someone has made a mistake in /etc/profile, or perhaps your local .profile script. The mistake is likely a missing " or ' mark in one of the statements. It is called the secondary prompt and is provided by the shell indicating that something more is required. In this context, it is a mistake.
Bill Hassell, sysadmin