On Fri, Mar 19, 2004 at 05:37:37PM -0800, Cory Petkovsek wrote:
> Here I figured out more specifics.
> linux client/solaris nfs:
> $ ls -l
> lrwxrwxrwx 1 cory cory 7 Mar 18 21:31 burn -> ../burn
> drwxr-xr-x 3 cory cory 512 Mar 19 2004 pub
> $ ls -ld ../burn
> drwxr-sr-x 8 cory cory 512 Mar 19 2004 ../burn
> $ mv burn pub
> $ ls -l
> drwxr-xr-x 3 cory cory 512 Mar 19 2004 pub
> $ ls -l pub
> lrwxrwxrwx 1 cory cory 7 Mar 18 21:31 burn -> ../burn
so, pub/burn ends up pointing to burn, which does not exist, correct?
> However on freebsd if I type "mv burn/ pub" it moves the target directory, not
> the symlink:
>
> $ ls -ld ../burn
> drwxr-sr-x 8 cory 10 512 Mar 19 17:21 ../burn/
> $ ls -l
> lrwxrwxrwx 1 cory 10 7 Mar 19 17:22 burn@ -> ../burn
> drwxr-xr-x 3 cory cory 512 Mar 19 17:30 pub/
> $ mv burn/ pub
> $ ll
> lrwxrwxrwx 1 cory 10 7 Mar 19 17:22 burn@ -> ../burn
> drwxr-xr-x 4 cory cory 512 Mar 19 17:30 pub/
> $ ls -ld ../burn
> ls: ../burn: No such file or directory
so burn (the directory) moved to pub/?
What's most odd to me is that both scenarios end up with a symlink to
nothing. Perhaps the lesson is to not mv a symlink because it's behaviour
is undefined ... or at least varies by implementation.
symlink(7) on OpenBSD says:
If it is explicitly intended that the command operate on the symbolic
link instead of following the symbolic link -- e.g., it is desired that
``chown owner slink'' change the ownership of ``slink'', not of what it
points to -- the -h option should be used. In the above example, ``chown
owner slink'' would change the owner of ``afile'' to ``owner'', while
``chown -h owner slink'' would change the ownership of ``slink''.
There are several exceptions to this rule. The mv(1) and rm(1) commands
do not follow symbolic links named as arguments, but respectively attempt
to rename and delete them. (Note that if the symbolic link references a
file via a relative path, moving it to another directory may very well
cause it to stop working, since the path may no longer be correct.)
The behaviour of you example is like on Linux.
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