linux - what is the difference between TTY and GNOME terminal -


operating system ubuntu, debian having gnome terminal real time usage. but, @ same time ctrl+alt+f2 shows terminal full fledged cui. if tty command executed in gnome terminal, shows output /dev/pts/3,4 etc. but, in cui environment shows "/dev/tty2". so, difference between these terminals.

this stems way when had number of fixed screens attached unix box. these had /dev/tty1,2,... device file number known beforehand , allocation of physical device vs. device file fixed.

when dialed in machine or had remote connections, "terminal" allocated dynamically , called "pseudo-terminals", hence device file /dev/pts/3,4... have own folder because there can many , clutter /dev directory if in there. number can vary according number of connections , device number can recycled.

the /dev/ttyn still there "default" terminals can access using ctrl-alt-f2 etc.

by way name tty comes era before terminals, , stems "tele typewriter", see https://en.wikipedia.org/wiki/teleprinter


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