1、报错

[root@cdh1 /]# su hdfs
[hdfs@cdh1 /]$ hadoop fs -ls /user/hue/test
[hdfs@cdh1 /]$ Exception in thread "main" java.lang.RuntimeException: core-site.xml not found
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2657)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2583)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2489)
        at org.apache.hadoop.conf.Configuration.set(Configuration.java:1174)
        at org.apache.hadoop.conf.Configuration.set(Configuration.java:1146)
        at org.apache.hadoop.conf.Configuration.setBoolean(Configuration.java:1491)
        at org.apache.hadoop.util.GenericOptionsParser.processGeneralOptions(GenericOptionsParser.java:319)
        at org.apache.hadoop.util.GenericOptionsParser.parseGeneralOptions(GenericOptionsParser.java:485)
        at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:170)
        at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:153)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:64)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
        at org.apache.hadoop.fs.FsShell.main(FsShell.java:372)

2、各种百度谷歌，都是/etc/profile的问题，于是

[hdfs@cdh1 /]$ su root
[root@cdh1 /]# vi /etc/profile
#内容如下(该补的补)：
export JAVA_HOME=/usr/java/jdk1.7.0_67-cloudera
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export SPARK_HOME=/opt/cloudera/parcels/CDH-5.15.0-1.cdh5.15.0.p0.21/lib/spark
export HADOOP_CONF_DIR=/etc/hadoop/conf
export SPARK_CONF_DIR=/etc/spark/conf
export MAVEN_HOME=/root/apache-maven-3.5.4
export LIVY_HOME=/root/livy-0.5.0-incubating-bin
export PATH=${JAVA_HOME}/bin:${MAVEN_HOME}/bin:${LIVY_HOME}:/bin:$PATH

3、检验，OK啦。

[root@cdh1 /]# su hdfs
[hdfs@cdh1 /]$ hadoop fs -ls /user/hue/test
Found 1 items
drwxr-xr-x   - hue hue          0 2018-09-07 02:53 /user/hue/test/test