ttyS - това се терминалните устройства свързани със серийните портове на компютъра ти.
относно vc и tty: накратко vc се явява alias на tty.
| Цитат |
In Linux the PC monitor is usually called the console and has several device special files associated with it: vc/0 (tty0), vc/1 (tty1), vc/2 (tty2), etc. When you log in you are on vc/1. To go to vc/2 (on the same screen) press down the 2 keys Alt(left)-F3. For vc/3 use Left Alt-F3, etc. These (vc/1, vc/2, vc/3, etc.) are called "virtual terminals". vc/0 (tty0) is just an alias for the current virtual terminal and it's where messages from the system are sent. Thus messages from the system will be seen on the console (monitor) regardless of which virtual terminal it is displaying.
You may log in to different virtual terminals and thus have a few different sessions with the computer going on at the same time. Only the system or the root user may write to /dev/vc/0 to which /dev/console is sometimes linked. For more info on the console see The Linux Console. |
