C:hadoopdemo>hadoop hdfs -cat /input_dir/input_file.txt
The filename, directory name, or volume label syntax is incorrect. Error: Could not find or load main class hdfs

C:hadoopdemo>hdfs -cat /input_dir/input_file.txt
The filename, directory name, or volume label syntax is incorrect. Unrecognized option: -cat Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.

C:hadoopdemo>where java
C:Javajdk1.8.0_211binjava.exe

C:hadoopdemo>where hadoop
C:hadoopbinhadoop
C:hadoopbinhadoop.cmd

C:hadoopdemo>dir /s
Volume in drive C has no label.
Volume Serial Number is *******

 Directory of C:hadoopdemo

17.05.2019  22:36    <DIR>          .
17.05.2019  22:36    <DIR>          ..
17.05.2019  22:25    <DIR>          input_dir
17.05.2019  22:22                28 input_file.txt
               1 File(s)             28 bytes

 Directory of C:hadoopdemoinput_dir

17.05.2019  22:25    <DIR>          .
17.05.2019  22:25    <DIR>          ..
17.05.2019  22:22                28 input_file.txt
               1 File(s)             28 bytes

 Total Files Listed:
           2 File(s)             56 bytes
           5 Dir(s)  314 405 015 552 bytes free