how to change hostname of of cisco router

Hello friends today I will tell you how to change hostname of router friend as we know when we start our cisco router the default name of router show router
router> it's indicate like this

show friend now we are going to change hostname of router
you have need to write following command on router  cli


router>enable
router# configure terminal
router(config)#hostname mynetwork
mynetwork(config)


Note-hostname       - hostname  is a command using for change a router hostname
         mynetwork    - mynetwork is here as a name of hostname



Thanks