hadoop无法启动namenode，其他正常，求大神解答

root@henry-virtual-machine:~# hadoop namenode –format
16/07/18 21:06:08 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   host = henry-virtual-machine/127.0.1.1
STARTUP_MSG:   args = [–format]
STARTUP_MSG:   version = 1.0.3
STARTUP_MSG:   build = https://svn.apache.org/repos/asf ... branches/branch-1.0 -r 1335192; compiled by 'hortonfo' on Tue May  8 20:31:25 UTC 2012
************************************************************/
Usage: java NameNode [-format] | [-upgrade] | [-rollback] | [-finalize] | [-importCheckpoint]
16/07/18 21:06:08 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at henry-virtual-machine/127.0.1.1
************************************************************/

已解决了，忽略，是输入问题