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Re: -e does not take effects in subshell

From: Greg Wooledge
Subject: Re: -e does not take effects in subshell
Date: Wed, 19 Aug 2015 08:42:14 -0400
User-agent: Mutt/

On Tue, Aug 18, 2015 at 03:31:10PM -0700, Linda Walsh wrote:
> with 'rm' functionality to remove '/' '.' and '..' was prohibited
> by POSIX, though the coreutils version still allows the choice 
> of the more dangerous removal of '/' with with the --[no-]preserve-root.
> But the more useful "rm -fr ." [...]

OK.  I think you are saying that the POSIX specification sentence

  If either of the files dot or dot-dot are specified as the basename portion
  of an operand (that is, the final pathname component) or if an operand
  resolves to the root directory, rm shall write a diagnostic message to
  standard error and do nothing more with such operands.

conflicts with your prior use of the GNU rm --one-file-system extension
as a shorthand for "find . -xdev -delete".

Since GNU already has a --no-preserve-root extension, as you pointed out,
I don't see what would stop them from adding another extension to permit
GNUrm -rfx . to work.  Perhaps you should come up with an appropriate
syntax for it and submit a patch to the GNU coreutils maintainers.  This
is not related to bash.

(Wow, how did we get here from "-e does not take effects in subshell"?)

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