A child process which survives the parent's death (for sure)

( command & )

Test scenario: * Open xterm (or konsole, ...) * Start xeyes with: ( xeyes & ) * Close the xterminal The xeyes process should be still running.

By: wiburg

2011-01-07 19:06:30

command

1 Alternatives + Submit Alt

A child process which survives the parent's death (Zsh version)
This is sample output - yours may be different.
0

command &!

adambyrtek · 2011-01-14 02:59:44 4

What Others Think

{ list; } &

RanyAlbeg · 746 weeks and 2 days ago

{ list; } & doesn't work here. I started xeyes this way. After closing the terminal, xeyes was terminated. This doesn't happen, if you start it with ( xeyes & ).

wiburg · 746 weeks and 2 days ago

Wow. How does it work? Does it fork shell one additional time?

lockie · 746 weeks and 2 days ago

Yes, you are right. But if you are running a script which consist of { list; } & it acts the same. lockie, the following is taken from ``man bash' ' : (list) list is executed in a subshell environment.

RanyAlbeg · 746 weeks and 2 days ago

Just to add my $0.02, it starts the process in the background in its own sub-shell. So it won't die if the spawning shell of the sub-shell is terminated. I always used to hup my commands to keep them alive even if the parent dies. However, I like this better! :)

scilec · 746 weeks and 1 day ago

wouldn't command & exit also work?

capncanuck · 745 weeks and 6 days ago

What's wrong with nohup xeyes&

dennisw · 745 weeks and 6 days ago

nice one! :) will definitely put to use

BruceLEET · 745 weeks and 4 days ago

Zsh has an even nicer way to do the same command &!

adambyrtek · 745 weeks and 2 days ago

nohup leaves all those annoying "nohup.out" files that I don't really care for. they pollute my filesystem if left unchecked

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