A.chown user1:user1 hadoop-2.7.3
B.chown -R user1:user1 hadoop-2.7.3
C.sudo chmod -R 777 hadoop-2.7.3
D.sudo chown -R user1:user1 hadoop-2.7.3
A.SequenceFile
B.CombinedInputFormat
C.Archive
D.MapFile
E.ByteBuffer
A.source/etc/profile
B.java-version
C.source/home/hadoop/jdk1.8.0_161
D.start-all.sh