1#
myq@ubuntu$ hadoop jar 123.jar /myq/a1.txt /myq/text1.txt
Exception in thread "main" java.lang.ClassNotFoundException: /myq/a1/txt
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:214)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)