You can't install them in the sense that they override the existing ones for all users of the system, but you can compile and install them in your home directory and configure your
PATH such that they are ran instead of the system ones.
To do so, download the latest version of coreutils from the GNU web site. Then, extract the archive and
cd into it, and run the following commands to compile and install it. Note the
--prefix switch that lets you configure the directory you want it to install in.
Most Debian systems are configured to automatically add
~/bin to your PATH. If that's the case, you can copy the utilities to that directory. However, it may not be configured to run executables from that directory before searching system directories, or you may prefer to keep them in their own directory. In that case, you will need to edit your
~/.profile to search that directory before searching the system ones. To do so, add a line like this:
If you'd prefer not to compile them, it might be possible to extract them from a newer Debian package by using
dpkg --fsys-tarfile command to convert a
.deb file to a tarball. But newer packages might require newer libraries not present on your system.