找不到Hadoop命令

我已经在linux机器上安装并配置了hadoop.现在我正在尝试运行一个示例MR作业.我已经通过命令/usr/local/hadoop/bin/start-all.sh启动了hadoop,输出是

namenode running as process 7876. Stop it first.
localhost: datanode running as process 8083. Stop it first.
localhost: secondarynamenode running as process 8304. Stop it first.
jobtracker running as process 8398. Stop it first.
localhost: tasktracker running as process 8612. Stop it first.

所以我认为我的hadoop配置成功.但是当我试着在命令下运行时它正在给予

jeet@jeet-Vostro-2520:~$ hadoop fs -put gettysburg.txt /user/jeet/getty/gettysburg.txt
hadoop: command not found

我是hadoop.somebody的新人请帮助.我也发布了我正在尝试的截图