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Old 12-30-2003, 03:54 AM   #1
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Registered: Oct 2003
Location: Vietnam
Distribution: Debian Linux 2.84
Posts: 2

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cannot log in as root in bash .?

In root, i am newbie. and test change shell command as chsh /etc/bash2.....
and now i cannot log in as root. It said: Cannot execute /bin/bash2: No such file or directory

I cannot log in as root so I cannot change anything in file /etc/passwd

When i boot by Floppy disk (Knoppix 3.2), it have only mini shell and cannot mount Floppy diskette....

Thanks when you read....Help me please

Old 12-30-2003, 05:44 AM   #2
Senior Member
Registered: Sep 2003
Location: Sweden
Distribution: Debian
Posts: 3,032

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The shell you specify has to be a valid executable file. If not you're going to get an error trying to log in. So either boot in single user mode (type linux single at the boot prompt) or boot Knoppix or some other CD-based distribution so you can perform a rescue operation, then edit the file /etc/passwd on your installed Linux system (meaning, not the one on the CD ).You will probably see a line that looks like this:
Change that to read:
You usually don't have to specify bash2 as the shell if you want Bash 2.x. Bash 2.x is distributed as the standard Bash shell on most current Linux distributions - try logging in as yourself and type bash --version to see what version you're running.

Old 12-30-2003, 05:48 AM   #3
Registered: Dec 2003
Location: Denmark
Distribution: Mandrake
Posts: 179

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If you can log in as ANY other user, you can type
su "vi /etc/passwd"
(in a console, if you look in in a graphic environment)
you will then be asked, for roots password. Type it in.
you look on a file, that has on entry per line. Every entry look like the following:
roots entry should be at the first line, change the bash2 to bash3
type <esc> and then type :wq (it will quit insert mode, and put you in command mode, save the file and quit vi).
now you should be able to log in as root
you should now
Old 12-30-2003, 10:04 PM   #4
LQ Newbie
Registered: Oct 2003
Location: Vietnam
Distribution: Debian Linux 2.84
Posts: 2

Original Poster
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cannot save what i modify passwd by user

i cannot save what something to /bin/bash in /etc/passwd or more as a user (not root) so i cannot modify anything in this file.

When i boot Knoppix 3.2 Floppy diskette, it have only mini shell, and when i use mount /dev/hdaX /mnt and system warning: Invalid argument

Everybody, please help me to fix the error...
I am newbie in Linux, start to how to use Linux and the problem is harder for me to fix.

Thanks all again,

Old 01-05-2004, 11:59 AM   #5
Registered: Dec 2003
Location: Denmark
Distribution: Mandrake
Posts: 179

Rep: Reputation: 30
mount needs to know, the type of file system, you are using on the hard disk partion. There are a few choice's you can take: (Try them
all, it don't hurt, all you get is an error)
-t vfat
if your have installed them on a m$ partion (not very likely)
-t ext2
if you have them installed on a non journaling linux drive (I can't check ore remember, but it thinks this is the default.)
-t ext3
This the journaling version of the file system.
To mount a non journaling file system on hda1 (first harddisk, first partion) do:
mount -t ext2 /dev/hda1 /<some empty directory>
Remember to check, that /mnt is empty. if it is not, create a directory under it.
Hope it helps
(I can remember, when i started to do linux, i could not figure out to shutdown the computer, some ha)


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