?
Solved

how to edit a file in a mounted file system in LINUX

Posted on 2011-03-03
8
Medium Priority
?
519 Views
Last Modified: 2012-06-27
I have a iso image in /exports/ under linux.
I mounted it to /exports/softImage/ using mount  -o loop  <iso file>   <target directory>.
Now in a subfolder under that target-directory i want to edit a file. When i try to save the file after editing it i get the error E212: Cant open file for writing
when i press df -ah to see how th efile system is configured:
/exports/myiso file        148M 148M    0 100%    /exports/softImage
0
Comment
Question by:pvinodp
8 Comments
 

Author Comment

by:pvinodp
ID: 35026989
If I try to change the permission of the file system [/exports/softimage] or the particular file i get this error Read only file system
0
 
LVL 3

Expert Comment

by:mwiercin
ID: 35027025
Remount the filesystem as read-write (it will affect your ISO though).

mount -o remount,rw /exports/softImage

Open in new window


Then back read-only

mount -o remount,ro /exports/softImage

Open in new window

0
 
LVL 16

Accepted Solution

by:
medvedd earned 1400 total points
ID: 35027892
The iso9660 filesystem is read-only. You will need to copy the files to another directory tree, make your changes and then burn a new image.
0
Get your Disaster Recovery as a Service basics

Disaster Recovery as a Service is one go-to solution that revolutionizes DR planning. Implementing DRaaS could be an efficient process, easily accessible to non-DR experts. Learn about monitoring, testing, executing failovers and failbacks to ensure a "healthy" DR environment.

 
LVL 31

Expert Comment

by:farzanj
ID: 35027916
I tried the same thing a few months back.

You have to copy all the contents, edit the file you want and recreate the ISO again.

I didn't like this solution, but apparently this is the only way it can be done-- as I found after a lot of research.
0
 
LVL 31

Expert Comment

by:farzanj
ID: 35027951
Please checkout my question a few months ago
http://www.experts-exchange.com/OS/Linux/Q_26685553.html
0
 
LVL 12

Assisted Solution

by:mccracky
mccracky earned 600 total points
ID: 35037300
You are wanting to edit an image of a CD.  If you edit it, the image will change.  So, you need to copy the contents, edit the file, and then use mkisofs to create the new ISO image.
0
 
LVL 35

Expert Comment

by:Duncan Roe
ID: 35047662
You need to make a copy of the entire iso file system. Then make your changes. Then create a new iso image using mkisofs.
The following commands will make a copy of softimage in your home directory (you may want to put it elsewhere - adjust the below commands to suit)
mkdir ~/softimage_copy
cd /exports/softimage
tar -cf - . | tar -C ~/softimage_copy -xpUf -

Open in new window

0
 

Author Closing Comment

by:pvinodp
ID: 35053580
Thanks for the solution
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Have you ever been frustrated by having to click seven times in order to retrieve a small bit of information from the web, always the same seven clicks, scrolling down and down until you reach your target? When you know the benefits of the command l…
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
Suggested Courses
Course of the Month15 days, 17 hours left to enroll

850 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