a.k.a. "the only useful C program I ever wrote"
A minimal implementation of realpath(1)
which is included in most UNIX
distributions, but not Mac OS X.
To install:
$ git clone https://github.com/harto/realpath-osx.git
$ cd realpath-osx
$ make
$ sudo make install
If you want a "real" implementation of this command, the GNU version is
available via the coreutils
Homebrew formula:
brew install coreutils