brew search stdbuf and get
No formula found for "stdbuf". Searching pull requests... Closed pull requests: coreutils: upstream fix for stdbuf (https://github.com/Homebrew/homebrew/pull/32955)
brew install coreutils but get
Warning: coreutils-8.23_1 already installed.
I do but see no stdbuf in my system.
$ std [tab] stdethers stdhosts
My PATH is
Using Macports and Homebrew together cause conflicts. Final solution is to uninstall Macports which is immature. Regardless of what your PATH is, Macports causes conflicts with programs in the PATH. I realised the core of the problem here at the end of the body about How to Enlarge Disk Image in VirtualBox?
How can you use stdbuf in OSX Yosemite?