Solved

Automatically enter root password when FSCK fails

Posted on 2006-06-28
8
636 Views
Last Modified: 2008-01-09
Does anyone know how to automatically enter the root password when FSCK fails @ the following prompt?  I want it to automatically enter the root password or bypass this to bring me to the shell automatically.  Woudl I have to edit any of the rc start-up scripts?  Thanks for any help.


enter root password or <CTRL> D
0
Comment
Question by:techie411
8 Comments
 
LVL 22

Expert Comment

by:pjedmond
ID: 17004651
I presume that this is during startup?

There is a good reason for asking for the root prompt, as you have access to the whole file system. In order to avoid this, you need to make the system boot into single mode *unless* you fancy patching the code? Assuming that this was during startup, then someone else may come up with a way of doing this automatically, but at the moment I'm afraid I can't think of any 'obvious' solution.
0
 
LVL 34

Accepted Solution

by:
Duncan Roe earned 168 total points
ID: 17005366
You may be able to find that text ("enter root password ...") in the rc script that runs fsck; or you may find an invocation of sulogin. My copy of sulogin prompts as follows:
Type control-d to proceed with normal startup,
(or give root password for system maintenance):

is that the message you see?
If so, ypu could replace sulogin with bash in the script: that will give you a root shell prompt and no password asked for.
Otherwise, you should find the commands that generate the prompt in the fsck-runnung script (grep for fsck in your rc script directory) - they will be invoked in the case of a serious failure. Again, replace with a simple invocation of bash.
0
 
LVL 22

Assisted Solution

by:pjedmond
pjedmond earned 166 total points
ID: 17007249
OK - Found it - on a Redhat system it's in:

/etc/rc.d/rc.sysinit

search for sulogin and comment out ot replace as appropriate.


Thanks to duncan_roe for the inspiration:

find /etc | awk {'print "echo " $0";cat " $0 " | grep sulogin"'} | /bin/bash > output.txt

gives all scripts and files containing the command sulogin in the /etc dir.

(   (()
(`-' _\
 ''  ''
0
Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

 
LVL 43

Assisted Solution

by:ravenpl
ravenpl earned 166 total points
ID: 17007453
If it's RH or FC, my sollution was to force fsck not to fail. But it may fail for other filesystem than ext2/ext3 - never tested
echo "-y" > /fsckoptions # answer yes to all questions
chattr +i /fsckoptions # prevent from deleting
0
 

Author Comment

by:techie411
ID: 17011338
How do I split points?  I'd like to give them to all 3 of you.  Thanks for your answers!  Much appreciated!! =)
0
 
LVL 22

Expert Comment

by:pjedmond
ID: 17011498
0

Featured Post

Use Case: Protecting a Hybrid Cloud Infrastructure

Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Network Interface Card (NIC) bonding, also known as link aggregation, NIC teaming and trunking, is an important concept to understand and implement in any environment where high availability is of concern. Using this feature, a server administrator …
I. Introduction There's an interesting discussion going on now in an Experts Exchange Group — Attachments with no extension (http://www.experts-exchange.com/discussions/210281/Attachments-with-no-extension.html). This reminded me of questions tha…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question