Hôte
+-----------------Logiciel-----------------------+
+----------Espace-noyau----------+--Espace-------+
|        +------Drivers-PTY----+ |  utilisateur  |
|        |  +------+           | |  +---------+  |
|        |  |      |<==========|=|=>|sshd@pts0|<=|==//=> Alice
|        |  |maître|           | |  +---------+  |
| +---+  |  |(PTM) |           | |  +---------+  |
| |   |<=|=>|      |<==========|=|=>|sshd@pts1|<=|==//=> Bob
| |   |  |  +------+           | |  +---------+  |
| | D |  |  +--Esclave-(PTS)-+ | |               |
| | D |  |  |  +----------+  | | |    +-----+    |
| | L |<=|==|=>|/dev/pts/0|<=|=|=|===>|shell|    |
| |   |  |  |  +----------+  | | |    +-----+    | 
| |   |  |  |  +----------+  | | |    +-----+    |
| |   |<=|==|=>|/dev/pts/1|<=|=|=|===>|shell|    |
| +---+  |  +----------------+ | |    +-----+    |
|        +---------------------+ |               |
+--------------------------------+---------------+
Alice et Bob se sont connectés à distance sur l'hôte pour ouvrir un shell.
DDL : Discipline de ligne
PTM : Drivers PTY maître
PTS : Drivers PTY esclave