hadoop，

WordCount所有需要的jar包
用一個sh命令拷出來，寫到一個臨時變量中去

!/bin/sh

hadoop_HOME=/opt/java/hadoop/hadoop-2.6.0/share/hadoop/
hadoop_CLASSPATH=””
for f in hadoopHOME/common/hadoop−∗.jar;dohadoopCLASSPATH={hadoop_CLASSPATH}:fdoneforfinhadoop_HOME/hdfs/sources/hadoop-*.jar;do
hadoop_CLASSPATH=hadoopCLASSPATH:f
done
for f in hadoopHOME/hdfs/hadoop−∗.jar;dohadoopCLASSPATH={hadoop_CLASSPATH}:fdoneforfinhadoop_HOME/mapreduce/hadoop-*.jar; do
hadoop_CLASSPATH=hadoopCLASSPATH:f
done
for f in hadoopHOME/tools/lib/commons−cli−1.2.jar;dohadoopCLASSPATH={hadoop_CLASSPATH}:fdone＃執行java文件javac−cphadoop_CLASSPATH name.java
＃生成jar文件
jar -cvf WordCount.jar org＃生成jar包
jar -xvf name.jar ./#结包

執行 hadoop jar包

＃然後在執行它
hadoop jar ./WordCount.jar org.apache.hadoop.examples.WordCount /usr/*.txt /output/workcount2

javac -cp $hadoop_CLASSPATH WordCount.java -d ./