hadoop jar 提醒 Not a valid JAR

hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/hadoop/hadoop/test/wordcount/input/docs/fair_scheduler.html wordcount/input/file1
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/hadoop/hadoop/test/wordcount/wordcount/jar wordcount/wordcount.jar
copyFromLocal: File /home/hadoop/hadoop/test/wordcount/wordcount/jar does not exist.
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/hadoop/hadoop/test/wordcount/wordcount.jar wordcount/wordcount.jar
copyFromLocal: File /home/hadoop/hadoop/test/wordcount/wordcount.jar does not exist.
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/long/Downloads/hadoop/test/wordcount.jar wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -ls
Found 1 items
drwxr-xr-x   - hadoop supergroup          0 2013-11-07 20:43 /user/hadoop/wordcount
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -du wordcount
Found 3 items
47457       hdfs://localhost:9000/user/hadoop/wordcount/input
0           hdfs://localhost:9000/user/hadoop/wordcount/output
4619        hdfs://localhost:9000/user/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -du wordcount/input/
Found 2 items
10672       hdfs://localhost:9000/user/hadoop/wordcount/input/file0
36785       hdfs://localhost:9000/user/hadoop/wordcount/input/file1
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ bin/hadoop jar wordcount/wordcount.jar com.gilang.handoop.wordcount /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
bash: bin/hadoop: No such file or directory
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar wordcount/wordcount.jar com.gilang.handoop.wordcount /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
Not a valid JAR: /usr/local/hadoop/bin/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar /usr/hadoop/wordcount/wordcount.jar com.gilang.handoop.wordcount /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
Not a valid JAR: /usr/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar /usr/hadoop/wordcount/wordcount.jar com.gilang.handoop.wordcount.WordCount.class /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
Not a valid JAR: /usr/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar
RunJar jarFile [mainClass] args...
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar /usr/hadoop/wordcount/wordcount.jar com.gilang.handoop.wordcount.WordCount.class /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
Not a valid JAR: /usr/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/long/Desktop/wordcount.jar wordcount/wordcount.jar
copyFromLocal: Target wordcount/wordcount.jar already exists
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -rm wordcount/wordcount.jar
Deleted hdfs://localhost:9000/user/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/long/Desktop/wordcount.jar wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar /usr/hadoop/wordcount/wordcount.jar com.gilang.handoop.wordcount.WordCount.class /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output
Not a valid JAR: /usr/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -rm wordcount/wordcount.jarDeleted hdfs://localhost:9000/user/hadoop/wordcount/wordcount.jar
hadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/long/Desktop/wordcount.jar wordcount/wordcount.jarhadoop@long-Aspire-4738ZG:/usr/local/hadoop/bin$ ./hadoop jar /usr/hadoop/wordcount/wordcount.jar com.gilang.handoop.wordcount.WordCount.class /usr/hadoop/wordcount/input /usr/hadoop/wordcount/output