Hadoop Shell Commands

namenode -format	format the DFS filesystem
secondarynamenode	run the DFS secondary namenode
namenode	run the DFS namenode
datanode	run a DFS datanode
dfsadminmradmin	run a DFS admin client
mradmin	run a Map-Reduce admin client
fsck	run a DFS filesystem checking utility
fs	run a generic filesystem user client
balancer	run a cluster balancing utility
fetchdt	fetch a delegation token from the NameNode
jobtracker	run the MapReduce job Tracker node
pipes	run a Pipes job
tasktracker	run a MapReduce task Tracker node
historyserver	run job history servers as a standalone daemon
job	manipulate MapReduce jobs
queue	get information regarding JobQueues
version	print the version
jar <jar>	run a jar file
distcp <srcurl> <desturl>	copy file or directories recursively
archive -archiveName NAME -p <parent path> <src>* <dest>	create a hadoop archive
classpath	prints the class path needed to get the Hadoop jar and the required libraries
daemonlog	get/set the log level for each daemon
-- or ---
CLASSNAME	run the class named CLASSNAME