[Ubuntu-zh] rm 能把rm 删除掉吗？

[David Lee]

jdl在SJDL:~$ uname -a
Linux SJDL 2.6.35-28-generic-pae #50-Ubuntu SMP Fri Mar 18 20:43:15 UTC 2011
i686 GNU/Linux
jdl在SJDL:~$ cp `which rm` `which rm`.bak
cp: cannot create regular file `/bin/rm.bak': Permission denied
jdl在SJDL:~$ sudo cp `which rm` `which rm`.bak
[sudo] password for jdl:
jdl在SJDL:~$ ls -l `which rm`*
-rwxr-xr-x 1 root root 46756 2010-06-11 13:11 /bin/rm
-rwxr-xr-x 1 root root 46756 2011-04-16 19:46 /bin/rm.bak
-rwxr-xr-x 1 root root 34332 2010-06-11 13:11 /bin/rmdir
jdl在SJDL:~$ sudo rm `which rm`
jdl在SJDL:~$ ls -l /bin/rm*
-rwxr-xr-x 1 root root 46756 2011-04-16 19:46 /bin/rm.bak
-rwxr-xr-x 1 root root 34332 2010-06-11 13:11 /bin/rmdir
jdl在SJDL:~$ mv /bin/rm
rm.bak  rmdir
jdl在SJDL:~$ sudo mv /bin/rm.bak /bin/rm
jdl在SJDL:~$

2011/4/16 Pointer Royden <pointertopointers在gmail.com>

> 自己在虚拟机里试试就知道了~
>
> 2011/4/16 forest chen <anyformail在gmail.com>
>
> > 好像新的内核禁止了这条命令。
> >
> > On Apr 16, 2011 8:42 PM, "唐毅明" <yimingnju在gmail.com> wrote:
> >
> > 今天在twitter看到这样一条命令 sudo rm -rf /*
> > 请问这样之后能彻底删掉 系统文件吗？ 遇到rm 怎么办？
> >
> > --
> > Yiming Tang
> >
> > Software Institute of Nanjing University Nanjing, P.R.China
> > Web: http://xianqu.org
> > Email: yimingnju在gmail.com
> > Follow me via twitter: @krafttuc <http://twitter.com/krafttuc>
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-- 
Regards, David
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