/usr/lib/hadoop/bin/mapred

Usage: mapred [OPTIONS] SUBCOMMAND [SUBCOMMAND OPTIONS]
 or    mapred [OPTIONS] CLASSNAME [CLASSNAME OPTIONS]
  where CLASSNAME is a user-provided Java class

  OPTIONS is none or any of:

--config dir   Hadoop config directory
--debug        turn on shell script debug mode
--help         usage information

  SUBCOMMAND is one of:


    Admin Commands:

frameworkuploader   mapreduce framework upload
hsadmin             job history server admin interface

    Client Commands:

classpath           prints the class path needed for running mapreduce subcommands
envvars             display computed Hadoop environment variables
job                 manipulate MapReduce jobs
minicluster         CLI MiniCluster
pipes               run a Pipes job
queue               get information regarding JobQueues
sampler             sampler
successfile         Print a _SUCCESS manifest from the manifest and S3A committers
version             print the version

    Daemon Commands:

historyserver       run job history servers as a standalone daemon

SUBCOMMAND may print help when invoked w/o parameters or with -h.