I have a program reading from standard input in a while loop. I need to run it in the background, even after I close the console. If the name of the program is prog, how can I do that?
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If I type the command echo -e "\004" |./prog &,after I close the console,the process end – Kbdman Nov 16 '15 at 07:06
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Possible duplicate of [How can i put the current running linux process in background](http://stackoverflow.com/questions/13676457/how-can-i-put-the-current-running-linux-process-in-background) – Marco Nov 16 '15 at 07:13
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4If you close the console, how can it read from stdin? – Nov 16 '15 at 07:37
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What is your `stdin`? A tty? And **why** do you ask? Please edit your question to motivate it – Basile Starynkevitch Nov 16 '15 at 07:39
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For backgrounding a process and having it run detached from the console/terminal it started on: `$ bg %1; disown %1`. (Or whatever PID your program has.) – Nov 16 '15 at 07:39
3 Answers
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You'll have to provide stdin redirected from some source other than the keyboard (which disappears when you log out), but
nohup prog < inputfile > outputfile 2> errorlogfile
should do the trick.
Darwin von Corax
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When I started with UNIX 24 years ago I had the same question.
If you are a newbie then what you are looking for is tmux: Here you can start a program that reads from STDIN, log out, log back in some time later, and continue.
Otherwise nohup is the correct answer.
Ole Tange
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1`tmux` is a new one on me, but it looks bloody useful. Guess I have some more reading to do. – Darwin von Corax Nov 18 '15 at 13:15
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You might be looking for screen
$ screen
$ prog < inputfile
# CTRL-A, CTRL-D to detach from the screen tty
# Log out or close console; log back in, or start another console later.
# To re-attach to the screen tty:
$ screen -r
matt2000
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