how do i access files off cd that are read-only

e3l · 02-21-2006, 01:49 PM

i copyied a file called n6bE1a.tar.gz from a cd into /blender. when i do: tar xzf /blender/n6bE1a.tar.gz it says
"
tar: blender: Cannot open: Read-only file system
tar: Error exit delayed from previous errors
"

how do i access it and unzip it?

n6bE1a is a zipped folder containing a program called Blender.
i am using Debian. -e3l

pixellany · 02-21-2006, 02:18 PM

Don't know what you mean by "mounting" a file...

You need to copy the file to the directory where you plan to install---eg /usr/share, /opt, whatever.
Set the permissions to 755 (turns on execution privleges)

Then: tar -xvf filename
Then whatever the program is set up for---eg run an install script.

Tinkster · 02-21-2006, 02:26 PM

Copying is not really required ... all you need to do is to
go to a directory that you have write access to, and invoke
the tar from there with the full path to the file, e.g.

cd ~
tar xf /mnt/cdrom/blender/n6bE1a.tar.gz

Cheers,
Tink

e3l · 02-21-2006, 02:40 PM

still not working. i still get:
tar: blender: Cannot open: Read-only file system
tar: Error exit delayed from previous errors
when i mount -t auto /dev/cdrom /mnt/cdrom
it says
mount: block device /dev/cdrom is write-protected, mounting read-only

Dragineez · 02-21-2006, 02:54 PM

Any optical media will be read only. Tinkster is right, you don't need to copy the files first. Just untar to a directory where you have write permission.

e3l · 02-21-2006, 03:04 PM

how do i untar to a directory where i have write permission. and what directory do i have write permission? sorry for my noobness. i just got linux yesterday. maybe i should just start with the basics.

Tinkster · 02-21-2006, 03:34 PM

That's why I suggested to CD to your home directory.
Or are you running a live CD or something?! :*)

CHeers,
Tink

DeusExLinux · 02-21-2006, 08:25 PM

If you want to specifiy where to untar something it wouldbe

tar -xvf filename.tar /path/to/file

Generally your /home/username/ file is one where you have write access, or.. anywhere if you are root.

You can't really extract files to the /mnt/cd/ directory, as that filesystem will always be mounted read only (A cd is not a hard-disk)..

Hope that clears up some of your questions.

e3l · 02-27-2006, 11:41 PM

i think that worked . thanks