"hdfs dfs -pwd" does not exist because there is no "working directory" concept in HDFS when you run commands from command line.
Your home dir is always the prefix of the path, unless it starts from "/".
Here's a list of HDFS commands
-appendToFile
-cat
-checksum
-chgrp
-chmod
-chown
-copyFromLocal
-copyToLocal
-count
-cp
-createSnapshot
-deleteSnapshot
-df
-du
-expunge
-get
-getfacl
-getfattr
-getmerge
-help
-ls
-mkdir
-moveFromLocal
-moveToLocal
-mv
-put
-renameSnapshot
-rm
-rmdir
-setfacl
-setfattr
-setrep
-stat
-tail
-test
-text
-touchz