What's The Difference Between Exit and Closing A Terminal Graphically?

[dd_wizard]

If I start a process in the background in a terminal window with &, then type exit, the process keeps running. If I start one in background, then close the terminal with the X (close) button, the background process terminates. Is that expected, and if so, what other differences are there between the two methods of closing a terminal window?

dd_wizard

[lensman3]

Try "nohup command &" where command is what you want to run. I don't know if this will work. The nohup command has been around since the '70's. See "man nohup".

[dd_wizard]

Ah, so closing the window instead of typing exit sends SIGHUP. Makes sense.

dd_wizard

[lensman3]

Are "exit" and "cntl-D" entered in a window the same?

"cntl-D" was a logout and closes the window.

[dd_wizard]

Ctrl-D doesn't send SIGHUP to background processes, and from the Advanced Bash-Scripting Guide:

Ctl-D
Log out from a shell (similar to exit).
EOF (end-of-file). This also terminates input from stdin.
When typing text on the console or in an xterm window, Ctl-D erases the character under
the cursor. When there are no characters present, Ctl-D logs out of the session, as expected.
In an xterm window, this has the effect of closing the window.

However, closing the window isn't quite the same as Ctl-D or exit, since that sends SIGHUP to background processes. It makes sense that closing the window would be like losing your serial connection back in the day.

dd_wizard