"svnrdump" command getting "svnrdump: command not found" error

I have installed command line tools on my macOS Sierra, but I am not able to use "svnrdump" command. It gives "svnrdump: command not found" error. Here is how my /usr/bin looks like.

This error generally indicates that the program you're attempting to execute doesn't exist in the $PATH environment variable. In your post, you said you're looking in /usr/bin but your screenshot clearly shows a different directory path - CommandLineTools/usr/bin - likely with CommandLineTools being the child of another directory (or multiple).

Locate the full path to svnrdump and run /path/to/svnrdump and it should work - then consider adding that path to $PATH so you don't have to do it all the time.