skd is a tool for the simple distribution of SSH keys in a growing environment. It allow you to create hosts, group them, and link that group a group of users with keys to easily distribute all affected keys. skd generates a DSA or RSA keypair, which is saved to its database and used as the authentication source for skd itself. This keypair can (and should be) additionally be encrypted using a passphrase. This allows you to simply add a user with their key and press one button to grant (and revoke!) the user's access to all needed hosts.
When moving files between filesystems that have permissions and those that do not, the user home directory is populated with files of all sorts of permissions. UFPM (Uniform File Permission Modifier) has been designed to modify all files and directories to have a uniform permission set based upon their file type.