Comments on: rm -rf / http://blog.venthur.de/2008/11/10/rm-rf/ and no tagline either Fri, 10 Sep 2010 23:04:49 +0000 http://wordpress.org/?v=2.5.1 By: giulivo navigante http://blog.venthur.de/2008/11/10/rm-rf/#comment-123413 giulivo navigante Thu, 08 Jan 2009 13:29:59 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-123413 this preserve option seems to me just a fucking stupid idea this preserve option seems to me just a fucking stupid idea

]]> By: youam http://blog.venthur.de/2008/11/10/rm-rf/#comment-114719 youam Mon, 10 Nov 2008 13:43:35 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-114719 man rm: --no-preserve-root do not treat ‘/’ specially --preserve-root do not remove ‘/’ (default) man rm:

–no-preserve-root
do not treat ‘/’ specially

–preserve-root
do not remove ‘/’ (default)

]]> By: cate http://blog.venthur.de/2008/11/10/rm-rf/#comment-114718 cate Mon, 10 Nov 2008 13:21:31 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-114718 It is the correct behaviour. Compare "rm -rf /tmp/" and "rm -rf /tmp/*". The first one will remove also the directory, the second one no. Now think about removing "/" (will it last only " "?). The root directory is special in the kernel: it is the root of the file tree. Allowing the root removal, the root must become a NULL pointer, thus requiring a lot of additional checks, which is not worth in POSIX like environment (Note: posix permit not allowing to remove some systems directory and files). It is the correct behaviour.

Compare “rm -rf /tmp/” and “rm -rf /tmp/*”. The first one will remove also the directory, the second one no.

Now think about removing “/” (will it last only ” “?). The root directory is special in the kernel: it is the root of the file tree. Allowing the root removal, the root must become a NULL pointer, thus requiring a lot of additional checks, which is not worth in POSIX like environment (Note: posix permit not allowing to remove some systems directory and files).

]]> By: James http://blog.venthur.de/2008/11/10/rm-rf/#comment-114717 James Mon, 10 Nov 2008 13:17:45 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-114717 Solaris managed to get rm -rf / prohibited as POSIX compliance, under the euphemism "<a href="http://blogs.sun.com/jbeck/date/20041001#rm_rf_protection" rel="nofollow">pre-determined heuristic</a>". Solaris managed to get rm -rf / prohibited as POSIX compliance, under the euphemism “pre-determined heuristic“.

]]> By: plavy http://blog.venthur.de/2008/11/10/rm-rf/#comment-114712 plavy Mon, 10 Nov 2008 11:03:39 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-114712 No, no la hagas tio. Siempre hay motivo para vivir... No, no la hagas tio. Siempre hay motivo para vivir…

]]> By: lubos http://blog.venthur.de/2008/11/10/rm-rf/#comment-114711 lubos Mon, 10 Nov 2008 10:50:42 +0000 http://blog.venthur.de/2008/11/10/rm-rf/#comment-114711 you have instaled safe-rm, don't you? you have instaled safe-rm, don’t you?

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