02-17-2009
look at /boot/grub/grub.conf and you can set the OS you want to be the default. Remember, it starts counting at 0 and not 1
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
Can someone tell me how to change time inside red hat linux machine as root?
ThanX! (1 Reply)
Discussion started by: whatisthis
1 Replies
2. HP-UX
Hello,
I try to make a change on the root password on HP UX. I use sam but it didn't work here.
I try to login as root but I failed however, I login to my name and then change to su and su password then it is o.k
There is not much different from root and su but how do we use root?
Thanks so... (4 Replies)
Discussion started by: mle06
4 Replies
3. UNIX for Dummies Questions & Answers
I booted up Sun V240 server with boot cdrom -s using the Sun Operating System CD. I now am at the # prompt and su - root . The system will not allow me to set password for root. Get following error:
# passwd
New Password: xxxxxxxx
Re-enter new Password: xxxxxxxx
passwd: Unexpected failure. ... (4 Replies)
Discussion started by: mayewil
4 Replies
4. HP-UX
Hello!
I forget the root password and I need to change it. I've read others threads about it in this forum, but it seems it's necessary to modify /etc/passwd file. In my HPUX Systems this passwd file have only "read" permissions ant its owner is the root user, so how can i modify this file, if I... (4 Replies)
Discussion started by: kaugrs
4 Replies
5. HP-UX
Hi, we have a HP-UX server of model 9000/800/rp4440. We have been trying to reset the root password but are in vain.I used the following command and also are the outputs which i have received.
# passwd
Changing password for root
New password:
Re-enter new password:
Unexpected failure.... (3 Replies)
Discussion started by: angelofhell
3 Replies
6. Solaris
Hi All,
I would like to find out when the root password changed last time..! :p Please guys help me Out (2 Replies)
Discussion started by: bullz26
2 Replies
7. Solaris
Hello All,
I have several solaris boxes running Solaris 8. When changing root passwords on them, all will simply ask for the new root password to change and of course to re-type the new password. One of the systems however asks for the existing root password before it will display the new password... (8 Replies)
Discussion started by: tferrazz
8 Replies
8. Red Hat
I have inherited an 80 machine cluster and need to change root on all of them. :confused: Any ideas on an automated way to do that?
---------- Post updated at 11:29 AM ---------- Previous update was at 11:15 AM ----------
Assuming a stronger password, would this be a reasonable method for... (4 Replies)
Discussion started by: rd42
4 Replies
9. Ubuntu
We are having a little problem on a server. We want that some users should be able to do e.g. sudo and become root, but with the restriction that the user can't change root password. That is, a guarantee that we still can login to that server and become root no matter of what the other users will... (2 Replies)
Discussion started by: 244an
2 Replies
10. UNIX for Beginners Questions & Answers
i do not have root on a solairs 10 server , however i do have the root role, i was wondering if I can change the root password as a a role with the passwd command? I have not tried yet.
and do i have to use the # chgkey -p afterwards?
i need to patch is why i am asking.
thanks (1 Reply)
Discussion started by: goya
1 Replies
LEARN ABOUT PHP
pivot_root
PIVOT_ROOT(8) System Administration PIVOT_ROOT(8)
NAME
pivot_root - change the root filesystem
SYNOPSIS
pivot_root new_root put_old
DESCRIPTION
pivot_root moves the root file system of the current process to the directory put_old and makes new_root the new root file system. Since
pivot_root(8) simply calls pivot_root(2), we refer to the man page of the latter for further details.
Note that, depending on the implementation of pivot_root, root and cwd of the caller may or may not change. The following is a sequence for
invoking pivot_root that works in either case, assuming that pivot_root and chroot are in the current PATH:
cd new_root
pivot_root . put_old
exec chroot . command
Note that chroot must be available under the old root and under the new root, because pivot_root may or may not have implicitly changed the
root directory of the shell.
Note that exec chroot changes the running executable, which is necessary if the old root directory should be unmounted afterwards. Also
note that standard input, output, and error may still point to a device on the old root file system, keeping it busy. They can easily be
changed when invoking chroot (see below; note the absence of leading slashes to make it work whether pivot_root has changed the shell's
root or not).
OPTIONS
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
EXAMPLES
Change the root file system to /dev/hda1 from an interactive shell:
mount /dev/hda1 /new-root
cd /new-root
pivot_root . old-root
exec chroot . sh <dev/console >dev/console 2>&1
umount /old-root
Mount the new root file system over NFS from 10.0.0.1:/my_root and run init:
ifconfig lo 127.0.0.1 up # for portmap
# configure Ethernet or such
portmap # for lockd (implicitly started by mount)
mount -o ro 10.0.0.1:/my_root /mnt
killall portmap # portmap keeps old root busy
cd /mnt
pivot_root . old_root
exec chroot . sh -c 'umount /old_root; exec /sbin/init'
<dev/console >dev/console 2>&1
SEE ALSO
chroot(1), pivot_root(2), mount(8), switch_root(8), umount(8)
AVAILABILITY
The pivot_root command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux August 2011 PIVOT_ROOT(8)