The disk quota system in Linux is quite old, and if you have a
distributed workstation environment with NFS mounted shares it is not
possible in a convenient way to inform users that they have exceeded
their disk limits.
If you have an account on a remote computer that you use very often, it is convienient if you do not have to type your password every time you log on to another host. You can achieve this by using ssh’s authorization keys.
First, you need to generate a key-pair. A key-pair consists of two small files. One file contains your secret key, the other your public key. Your secret key is, as the name implies, secret.
...