hadoop@ssmaster:~$ hadoop fs
Usage: hadoop fs [generic options][-appendToFile <localsrc> ... <dst>][-cat [-ignoreCrc] <src> ...][-checksum <src> ...][-chgrp [-R] GROUP PATH...][-chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH...][-chown [-R] [OWNER][:[GROUP]] PATH...][-copyFromLocal [-f] [-p] [-l] <localsrc> ... <dst>][-copyToLocal [-p] [-ignoreCrc] [-crc] <src> ... <localdst>][-count [-q] [-h] <path> ...][-cp [-f] [-p | -p[topax]] <src> ... <dst>][-createSnapshot <snapshotDir> [<snapshotName>]][-deleteSnapshot <snapshotDir> <snapshotName>][-df [-h] [<path> ...]]   .........   .........

hadoop@ssmaster:~$ hadoop fs -mkdir data
hadoop@ssmaster:~$ hadoop fs -ls /
Found 1 items
drwxr-xr-x - hadoop supergroup 0 2016-10-22 22:33 /data

hadoop@ssmaster:~$ vi paper.txt
hadoop@ssmaster:~$ ls
Desktop  Documents  Downloads  examples.desktop  hadoop-2.6.4.tar.gz  Music  paper.txt  Pictures  Public  Templates  Videos
hadoop@ssmaster:~$ more paper.txt

There are moments in life when you miss someone so much that you just want to pick them from your dreams and hug them for real! Dream
what you want to dream;go where you want to go;be what you want to be,because you have only one life and one chance to do all the th
ings you want to do

.....

hadoop@ssmaster:~$ hadoop fs -put paper.txt /data
DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.hadoop@ssmaster:~$ hadoop fs -ls /data
Found 1 items
-rw-r--r--   1 hadoop supergroup       1762 2016-10-22 22:44 /data/paper.txt

hadoop@ssmaster:~$ hadoop fs -cat /data/paper.txt
There are moments in life when you miss someone so much that you just want to pick them from your dreams and hug them for real! Dream what you want to dream;go where you want to go;be what you want to be,because you have only one life and one chance to do all the things you want to do.

hadoop@ssmaster:~$ rm paper.txt
hadoop@ssmaster:~$ ls
Desktop  Documents  Downloads  examples.desktop  hadoop-2.6.4.tar.gz  Music  Pictures  Public  Templates  Videos
hadoop@ssmaster:~$ hadoop fs -get /data/paper.txt
hadoop@ssmaster:~$ ls
Desktop  Documents  Downloads  examples.desktop  hadoop-2.6.4.tar.gz  Music  paper.txt  Pictures  Public  Templates  Videos

hadoop@ssmaster:~$ hadoop fs -rm /data/paper.txt
16/10/22 22:47:28 INFO fs.TrashPolicyDefault: Namenode trash configuration: Deletion interval = 0 minutes, Emptier interval = 0 minutes.
Deleted /data/paper.tx

hadoop@ssmaster:~$ hadoop fs -ls /
Found 4 items
drwxr-xr-x   - hadoop supergroup          0 2016-10-22 22:48 /data
drwxr-xr-x   - hadoop supergroup          0 2016-10-23 00:01 /input
drwxr-xr-x   - hadoop supergroup          0 2016-10-23 00:08 /output
drwx------   - hadoop supergroup          0 2016-10-23 00:05 /tmphadoop@ssmaster:~$ hadoop fs -rm  -r /input
16/10/23 00:37:03 INFO fs.TrashPolicyDefault: Namenode trash configuration: Deletion interval = 0 minutes, Emptier interval = 0 minutes.
Deleted /input
hadoop@ssmaster:~$ hadoop fs -ls /
Found 3 items
drwxr-xr-x   - hadoop supergroup          0 2016-10-22 22:48 /data
drwxr-xr-x   - hadoop supergroup          0 2016-10-23 00:08 /output
drwx------   - hadoop supergroup          0 2016-10-23 00:05 /tmp