/usr/bin/cmake: is a directory. Not able to grab the version of cmake?

Question

I just have installed CMAKE in my ubuntu machine.. So when I do whereis cmake, it gives me the actual path

username@phx7b02c-ee1b:~/CMAKE/cmake-2.8.11$ whereis cmake
cmake: /usr/bin/cmake

But whenever I try to get the version of cmake, I always get the below message.. I am not sure what wrong I am doing here?

username@phx7b02c-ee1b:~/CMAKE/cmake-2.8.11$ /usr/bin/cmake --version
-bash: /usr/bin/cmake: is a directory

Can anyone help me here?

Answer 1

Try the command type instead of whereis for locating executables.

$ type -a cmake
cmake is /usr/bin/cmake

$ /usr/bin/cmake --version
cmake version 2.8.4

The command whereis doesn't use your current environment, it looks in several locations that are typically used for executables, such as:

excerpt from whereis man page

FILES
       /{bin,sbin,etc}

       /usr/{lib,bin,old,new,local,games,include,etc,src,man,sbin,
                           X386,TeX,g++-include}

       /usr/local/{X386,TeX,X11,include,lib,man,etc,bin,games,emacs}