bash: hadoop: command not found

输入[root@localhost bin]# hadoop fs -ls  / 报bash: hadoop: command not found 这个错误

需要将hadoop/bin路径加入PATH，配置环境变量

[root@localhost bin]# vi ~/.bash_profile 打开文件，添加hadoop的bin路径到path中

PATH=$PATH:$HOME/bin:/usr/local/hadoop-1.1.2/bin

保存重启启动hadoop  

或者[root@localhost bin]# source ~/.bash_profile ，使bash_profiel文件生效

export JAVA_HOME=/usr/local/java/jdk1.8.0_05

export JRE_HOME=$JAVA_HOME/jre

export CLASSPATH=./:$JAVA_HOME/lib:$JRE_HOME/lib:$JRE_HOME/lib/tools.jar

export HADOOP_HOME=/opt/hadoop

export HIVE_HOME=/opt/hive

export HBASE_HOME=/opt/hbase

export HADOOP_MAPRED_HOME=${HADOOP_HOME}

export HADOOP_COMMON_HOME=${HADOOP_HOME}

export HADOOP_HDFS_HOME=${HADOOP_HOME}

export YARN_HOME=${HADOOP_HOME}

export HADOOP_YARN_HOME=${HADOOP_HOME}

export HADOOP_CONF_DIR=${HADOOP_HOME}/etc/hadoop

export HDFS_CONF_DIR=${HADOOP_HOME}/etc/hadoop

export YARN_CONF_DIR=${HADOOP_HOME}/etc/hadoop

export PATH=$PATH:$HOME/bin:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HBASE_HOME/bin:$HIVE_HOME/bin