1. Terminal classification
Two emulation terminals: 1. GHOMETerminal for GNOME desktop; 2. KonsoleTerminal for KDE desktop
Remote connection terminal tools: Xshell, CRT
2. View the virtual terminal to which the current terminal belongs
View by tty command
3. How different terminals communicate
1), use ctrl+shift+n to create a new terminal
2), open two terminals at the same time, the first terminal executes: echo the content to be passed > the address of the other terminal viewed with tty
The meaning of ">" redirection
3) Send a message to all terminals
Shutdown keyword shutdown +10 "This entry is defined as shutdown after 10 minutes"
shutdown -c cancels the command
Send a custom message to all terminals: wall "I'm going to shutdown"