我安装了hadoop 2.6，一切似乎都正常。然后，我重新启动了所有计算机，而没有先停止dfs，并且出现以下错误。有什么方法可以解决吗？
$ ./sbin/start-dfs.sh
./sbin/start-dfs.sh: line 55: $hadoop/bin/bin/hdfs: No such file or directory
Starting namenodes on []
./sbin/start-dfs.sh: line 60: $hadoop/bin/sbin/hadoop-daemons.sh: No such file or directory
./sbin/start-dfs.sh: line 73: $hadoop/bin/sbin/hadoop-daemons.sh: No such file or directory
./sbin/start-dfs.sh: line 108: $hadoop/bin/bin/hdfs: No such file or directory
~/hadoop$ ./bin/hadoop namenode -format
DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.
HADOOP_HDFS_HOME not found!
~/hadoop$ ./bin/hdfs namenode -format
Error: Could not find or load main class org.apache.hadoop.hdfs.server.namenode.NameNode
在
.bashrc中设置环境变量，hadoop-env.sh
export HADOOP_HDFS_HOME=$HADOOP_HOME