The BSD versions of a number of basic Unix commands, such as ls, behave differently from the GNU versions used by Ubuntu.
Some operating systems, including Solaris, provide BSD commands in addition to the "native" ones. For example, Solaris 9 has a /usr/ucb directory in addition to the /usr/bin directory, with some commands names duplicated.
Is there something similar for Ubuntu? I haven't found a relevant package, either one that's installable via apt or as source.
Reading through this Unix and Linux post titled "Any options to replace GNU coreutils on Linux?", one option could be the Heirloom project toolset. It includes ls, among other things, and hopefully that ls behaves like you want it to. Of interest is this point in the highlights:
Multiple versions of many utilities are provided to approach compatibility with various specifications and Unix flavors, namely SVID3/SVR4, SVID4/SVR4.2MP, POSIX.2-1992/SUSV2, POSIX.1-2001/SUSV3, and 4BSD (SVR4 /usr/ucb).
Note the last item: "4BSD (SVR /usr/ucb)".
It doesn't have an Ubuntu package that I know of. The installation instructions build an RPM, which you could convert using alien and then install. How do I install and manage RPMs?
