not able to run jar file on cloudera

Hello all

While im trying run wordcount jar on cludera it says invalid jar.Please let me know where im going wrong

below is the command im using
hadoop jar /user/lib/hadoop-0.20-mapreduce/hadoop-examples.jar WordCount /user/cloudera/input outdir

error message: Not a Valid Jar home/user/lib/hadoop-0.20-mapreduce/hadoop-examples.jar