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Possible Duplicate:
How can I close a terminal without killing the command running in it?

If I open a terminal emulator, type firefox & and then close the terminal, the process it launched -Firefox- gets killed as it was its child.

How can I prevent this behavior?

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marked as duplicate by Mikel, Renan, Gilles, jasonwryan, jw013 Nov 7 '12 at 14:21

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

in any case, for most cases a "Run program..."-style launcher will do. – vemv May 13 '12 at 17:16
up vote 6 down vote accepted

Use the disown command. In zsh you can also use &| to background and disown in a single operation.

$ firefox &
[1] 74773
$ disown %1 # or "disown %firefox"
$ firefox &| # zsh only; bash will report "syntax error near unexpected token `|'"
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cool! apparently one can't do it in one line right? will consider switching to zsh. – vemv May 13 '12 at 17:31
I couldn't find one, sadly. Possibly someone more expert in bash knows a trick, other than a shell function that manipulates job control to do it. – geekosaur May 13 '12 at 17:35
@vemv try nohup. Example - nohup firefox – Ulrich Dangel May 13 '12 at 21:22
cute, thank you. – vemv May 13 '12 at 21:32

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