To apply this patch using the GNU patch utility (available at http://www.gnu.org/software/patch), run this command in the directory containing the ssh-3.2.0-commercial directory: patch -p0 < ssh-3.2-aix-chroot.diff When using the binary package available in this directory, you need to activate it after installation by using the license_ssh2.dat file included on the product CD or downloaded from the e-commerce site.