03-27-2002
fsck -y it works!
Well, it works well!
For those who use a Macintosh(and I am one) this is "part of" Disk First Aid being built in.
The steps follow:
sudo ShutDown Now Hit return
Enter password
You are "sudo user"
You are in single user mode:
type fsck -y
The disk is checked. If you receive a "message" that the Macintosh appears to be OK type reboot.
This saves a CD Rom Start which is slow as molasses.
If errors are found they will be repaired -y for yes repair.
Wonderful to learn this.
10 More Discussions You Might Find Interesting
1. Solaris
OS: Solaris 5.8
Everytime I run fsck -y I get: FILE SYSTEM STATE IN SUPERBLOCK IS WRONG; FIX? yes
Do I need to run fsck with the backup superblock option or is there
some other option I should use. I have tried the format->analyze->read
option but that does not report any corrupt blocks.... (5 Replies)
Discussion started by: run_time_error
5 Replies
2. UNIX for Dummies Questions & Answers
I want to use fsck to check and repair my linux system. When I use this command, what do I need to pay attention to or what should I do to make job running successfully. Thanks for your inputs for a newbie. (3 Replies)
Discussion started by: duke0001
3 Replies
3. UNIX for Dummies Questions & Answers
hy guys
I got a ques
I cant acess root, i tried to fsck it, but gets errors to read file systems. What steps do you take to recover the host before you see if there is any data corruption on the root drive?
Regards
Charneet (1 Reply)
Discussion started by: charneet
1 Replies
4. Solaris
Hello
I am getting this in dmesg:
/mount1: unexpected free inode 1262865, run fsck(1M) -o f
What are the options I should use with fsck?
thanks (2 Replies)
Discussion started by: melanie_pfefer
2 Replies
5. UNIX for Dummies Questions & Answers
i want to know what does it mean by doing a consistentcy check fsck on a disk and why journaling filesystems dont need to do it
and what is meant by disk is in a consistent state when writing because entries are recorded in a journal and then to the metadata and then removed from journal (1 Reply)
Discussion started by: farhan_t49
1 Replies
6. UNIX for Dummies Questions & Answers
Hello
I own a SPARC Ultra 10 workstation (standalone) and when issuing the fsck command I get the following output on fs C0t0d0s7:
Phase 1 (checks blocks and sizes):
dada warning: /pci@lf;0/pci@1, 1/ide@3/dad@0,0(dad1): ATA Transport failed:reason, `incomplete'>
Uncorrectable data... (2 Replies)
Discussion started by: tjwops
2 Replies
7. Solaris
What can I fix this issue? I have ran below commands but everything is same.:confused:
WARNING: Last shutdown is later than time on time-of-day chip: check date.
The / file system (/dev/rdsk/c1t0d0s0) is being checked
WARNING - unable to repair the / filesystem. Run fsck manually (fsck -F... (4 Replies)
Discussion started by: getrue
4 Replies
8. UNIX for Advanced & Expert Users
unable to repair the / filesystem. Run fsck manually (fsck -F ufs /dev/rdsk/c1t0d0s0)
--------------------------------------------------------------------------------
What can I fix this issue? I have ran below commands but everything is same.
WARNING: Last shutdown is later than time... (2 Replies)
Discussion started by: VijayPuttu
2 Replies
9. Solaris
Hi,
When we are running fsck in vxvm FS within few sec it will completed even if data is more than 500GB or in TB also.
compare to UFS FS in that it will take more time compare with vxvm.UFS check FS in block level. & then vvxm on where its checking the FS.
Please explain. (1 Reply)
Discussion started by: tiger09
1 Replies
10. Solaris
Dear all,
solaris version
--------------------
Oracle Solaris 10 9/10 s10s_u9wos_14a SPARC
Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
Assembled 11 August 2010
-bash-3.2$ uname -a
SunOS nblabsvr 5.10 Generic_144488-08 sun4u sparc SUNW,SPARC-Enterprise
... (5 Replies)
Discussion started by: ossupport55
5 Replies
LEARN ABOUT LINUX
sudo_root
sudo_root(8) System Manager's Manual sudo_root(8)
NAME
sudo_root - How to run administrative commands
SYNOPSIS
sudo command
sudo -i
INTRODUCTION
By default, the password for the user "root" (the system administrator) is locked. This means you cannot login as root or use su. Instead,
the installer will set up sudo to allow the user that is created during install to run all administrative commands.
This means that in the terminal you can use sudo for commands that require root privileges. All programs in the menu will use a graphical
sudo to prompt for a password. When sudo asks for a password, it needs your password, this means that a root password is not needed.
To run a command which requires root privileges in a terminal, simply prepend sudo in front of it. To get an interactive root shell, use
sudo -i.
ALLOWING OTHER USERS TO RUN SUDO
By default, only the user who installed the system is permitted to run sudo. To add more administrators, i. e. users who can run sudo, you
have to add these users to the group 'admin' by doing one of the following steps:
* In a shell, do
sudo adduser username admin
* Use the graphical "Users & Groups" program in the "System settings" menu to add the new user to the admin group.
BENEFITS OF USING SUDO
The benefits of leaving root disabled by default include the following:
* Users do not have to remember an extra password, which they are likely to forget.
* The installer is able to ask fewer questions.
* It avoids the "I can do anything" interactive login by default - you will be prompted for a password before major changes can happen,
which should make you think about the consequences of what you are doing.
* Sudo adds a log entry of the command(s) run (in /var/log/auth.log).
* Every attacker trying to brute-force their way into your box will know it has an account named root and will try that first. What they do
not know is what the usernames of your other users are.
* Allows easy transfer for admin rights, in a short term or long term period, by adding and removing users from the admin group, while not
compromising the root account.
* sudo can be set up with a much more fine-grained security policy.
* On systems with more than one administrator using sudo avoids sharing a password amongst them.
DOWNSIDES OF USING SUDO
Although for desktops the benefits of using sudo are great, there are possible issues which need to be noted:
* Redirecting the output of commands run with sudo can be confusing at first. For instance consider
sudo ls > /root/somefile
will not work since it is the shell that tries to write to that file. You can use
ls | sudo tee /root/somefile
to get the behaviour you want.
* In a lot of office environments the ONLY local user on a system is root. All other users are imported using NSS techniques such as
nss-ldap. To setup a workstation, or fix it, in the case of a network failure where nss-ldap is broken, root is required. This tends to
leave the system unusable. An extra local user, or an enabled root password is needed here.
GOING BACK TO A TRADITIONAL ROOT ACCOUNT
This is not recommended!
To enable the root account (i.e. set a password) use:
sudo passwd root
Afterwards, edit the sudo configuration with sudo visudo and comment out the line
%admin ALL=(ALL) ALL
to disable sudo access to members of the admin group.
SEE ALSO
sudo(8), https://wiki.ubuntu.com/RootSudo
February 8, 2006 sudo_root(8)