On Tue, 13 Sep 2011 07:36:15 -0700
PJ Weisberg <pjweisb...@gmail.com> wrote:

[...]
> Were you running as root when you checked out?  The files are owned
> by root, and only root has permission to delete them.
Not quite correct.  On POSIX, right to delete a file is controlled
by the permissions on the containing directory, not on the file itself.

To demonstrate:

~$ id
uid=1000(kostix) gid=1000(kostix) groups=1000(kostix),...
~$ cd /tmp
/tmp$ su
Password:
/tmp# mkdir foo
/tmp# chgrp kostix foo
/tmp# chmod 0775 foo
/tmp# ls -ld $_
drwxrwxr-x 2 root kostix 4096 Sep 13 18:53 foo
/tmp# touch foo/blarb
/tmp# vdir foo
total 0
-rw-r--r-- 1 root root 0 Sep 13 18:53 blarb
/tmp# exit
/tmp$ id
uid=1000(kostix) gid=1000(kostix) groups=1000(kostix),...
/tmp$ rm foo/blarb
rm: remove write-protected regular empty file `foo/blarb'? y
/tmp$ vdir foo
total 0
/tmp$

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