Tomcat initial management user and password

After tomcat is installed, or in the binary version, when you start the tomcat service and log on to the management interface, you will be asked to enter the user name and password. But we don't know what it is, then we need to check \ tomcat6 \ conf folder has a tomcat-users.xml, there should be similar content <tomcat-users> <user name = "admin" password = "admin" roles = "admin-gui, manager-gui"/>

....

Or

<? Xml version = '1. 0' encoding = 'utf-8'?>
<Tomcat-users>
<Role rolename = "tomcat"/>
<Role rolename = "manager"/>
<Role rolename = "admin"/>
<User username = "tomcat" password = "tomcat" roles = "tomcat, manager, admin"/>
</Tomcat-users>