hi,
iam not clear about your question.in case you wanted to ask what would
happen when you untar at a place where a directory with the same name
exist the this is the reply.
if you tar a directory and then restore it later at a place there already
exist a directory by that name.then on untaring the directory would be
over written.
if you wanted to ask that when you tar a file will the old file continue
to be there then the answer is yes.
the second question:I hope the attached document answers yur second
question.
Regards,
BAlakrishnan Asish
On Thu, 26 Sep 2002, Kerry Miller wrote:
> Sorry for combining 2 questions, but they're both short!
>
> First, if I use "tar" to backup something then later restore it, will it
> wipe out anything that's in the existing directories? For example, if I
> tar up /usr/home/ to get all my home directories, if there is something
> under /usr/ will it wipe it out or just leave it? I think I'll have to
> experiment a little...
>
> Also, I know how to boot into single-user mode w/ Lilo, can somebody tell
> me how to do it w/ Grub or point me to a how-to? I can't find much about
> Grub in the how-tos but since I'm using it on my laptop I might need to
> know sometime!
>
> Thanks,
> Kerry
>
>
>
>
--
******************************************************************************
The Ultimate Inspiration is the Deadline
Nolan Bushnell
*******************************************************************************
Asish Balakrishnan email-:[EMAIL PROTECTED]
2nd Year MCA
[EMAIL PROTECTED]
Dept of Computer Science
University of Pune
Pune-411007
#Red Hat Linux 7.3 Rescue Mode Booting Rescue Mode Redundant Array of
Independent Disks (RAID)
Red Hat Docs
Red Hat Docs > Manuals > Red Hat Linux Manuals > Red Hat Linux
7.3 >
Red Hat Linux 7.3: The Official Red Hat Linux Customization Guide
Prev Chapter 3. Rescue Mode Next
______________________________________________________________________
Booting Single-User Mode
You may be able to boot single-user mode directly. If your system
boots, but does not allow you to log in when it has completed booting,
try single-user mode.
If you are using GRUB, use the following steps to boot into
single-user mode:
1. If you have a GRUB password configured, type p and enter the
password.
2. Select Red Hat Linux with the version of the kernel that you wish
to boot and type e for edit. You will be presented with a list of
items in the configuration file for the title you just selected.
3. Select the line that starts with kernel and type e to edit the
line.
4. Go to the end of the line and type single as a separate word
(press the [Spacebar] and then type single). Press [Enter] to exit
edit mode.
5. Back at the GRUB screen, type b to boot into single user mode.
If you are using LILO, specify one of these options at the LILO boot
prompt (if you are using the graphical LILO, you must press [Ctrl]-[x]
to exit the graphical screen and go to the boot: prompt):
boot: linux single
boot: linux emergency
In single-user mode, you computer boots to runlevel 1. Your local
filesystems will be mounted, but your network will not be activated.
You will have a usable system maintenance shell.
In emergency mode, you are booted into the most minimal environment
possible. The root filesystem will be mounted read-only and almost
nothing will be set up. The main advantage of emergency mode over
linux single is that your init files are not loaded. If init is
corrupted or not working, you can still mount filesystems to recover
data that could be lost during a re-installation.
Have you ever rebuilt a kernel and, eager to try out your new
handiwork, rebooted before running /sbin/lilo? If you did not have an
entry for an older kernel in lilo.conf, you had a problem. If you
would like to know a solution to this problem, read this section.
In many cases, you can boot your Red Hat Linux system from the Red Hat
Linux boot disk [1] with your root filesystem mounted and ready to go.
Here is how to do it:
Enter the following command at the boot disk's boot: prompt:
linux single root=/dev/hdXX initrd=
Replace the XX in /dev/hdXX with the appropriate letter and number for
your root partition.
What does this command do? First, it starts the boot process in
single-user mode, with the root partition set to your root partition.
The empty initrd specification bypasses the installation-related image
on the boot disk, which will cause you to enter single-user mode
immediately.
Is there a negative side to using this technique? Unfortunately, yes.
Because the kernel on the Red Hat Linux boot disk only has support for
IDE built-in, if your system is SCSI-based, you will not be able to do
this. In that case, you will have to access rescue mode using the
linux rescue command mentioned above.
______________________________________________________________________
Prev Home Next
Booting Rescue Mode Up Redundant Array of Independent Disks (RAID)
