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Groups > gnu.bash.bug > #16494

‘command … &’ creates subshell

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Dear maintainer,

I believe, that the current behaviour of GNU Bash:

	$ command cat &
	[1] 3831
	$ ps --pid $! --ppid $!
	  PID TTY          TIME CMD
	 3831 pts/3    00:00:00 bash
	 3832 pts/3    00:00:00 cat

is problematic.  Namely it is:

1) unexpected, as (a) it does not seem to be documented, (b) itʼs counter-intuitive and (c) other bourne-like shells (busybox ash, dash, ksh93, mksh, zsh) does not do that;

2) inconvenient, as in some cases PID of the parent shell is not an appropriate substitute for the PID of the real process.

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‘command … &’ creates subshell Dmitry Alexandrov <dag@gnui.org> - 2020-06-29 23:33 +0300

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