You booted to a cd and are trying to change root's password? You can't just use passwd since it's trying to write to the CD and it's not writeable. If you're trying to modify root's password on the system disk (/dev/dsk/c0t0d0s0 for example), you'll need to mount slice 0 and edit the shadow file.
Code:
# mount /dev/dsk/c0t0d0s0 /a
# cd /a/etc
# vi shadow
Delete the bit of garbage in field 2 and save the file. Then umount /a and reboot the system. Your password will be blank. Log in as root and set the password again.
I knew it would happen sooner or later....
We have a requirement that specific individuals need "sudo root" authority. I knew it only a matter of time before someone decided to change the root password (at least they owned up to it).
Now the question is how can I grant all rights except... (4 Replies)
Hello chiefs :)
I have a SUN Enterprise 250, running Solaris 8.5 - I have managed to be able to connect a dumb terminal to the box via a standard straight-through rj45 cable, to my ibm laptop. OK so Putty can connect to the box via ssh - nice! But I dont have the password for root - or any... (1 Reply)
I forget the Root Passwd of my Sun Netra 20 server and break the same by editing /etc/shadow.Now there is no passwd for Root.
And How to set new root passwd?Pls help.... (2 Replies)
Hi All,
Today I faced a problem trying to log in as root. The output error is
cannot execute sh: No such file....
I doubted there is something wrong with shell interpreter which resides in /etc/passwd file for every user who logs in.
I checked and the line for root account was... (4 Replies)
hi
i have a RHEL 4 and have forgot root passwd
tried to boot in by singel user and then changing the passwd but it's not letting me do that ......throwing some weird error as .......manipulation
i also tried to make a new user from CLI but even though it's not letting me in from that user as... (12 Replies)
I accidentally changed root shell from /bin/bash to bash in /etc/password, then logged out from root. Now I can't login as root and got "No shell" error, although I have root password. "su -f -s /bin/bash" command does NOT work. There is no GUI interface for this system.
My question: Do I have... (7 Replies)
Hi All
I had installed sudo in HP UX 11.3 and it is working fine but not able to make entry required to set permission similar to ROOT without using password (PASSWD) change option for define user in /etc/sudoers file
Please help if some know the syntex? :confused::wall: (2 Replies)
i do not have root on a solairs 10 server , however i do have the root role, i was wondering if I can change the root password as a a role with the passwd command? I have not tried yet.
and do i have to use the # chgkey -p afterwards?
i need to patch is why i am asking.
thanks (1 Reply)
Discussion started by: goya
1 Replies
LEARN ABOUT DEBIAN
passwd
PASSWD(5) File Formats and Conversions PASSWD(5)NAME
passwd - the password file
DESCRIPTION
/etc/passwd contains one line for each user account, with seven fields delimited by colons (":"). These fields are:
o login name
o optional encrypted password
o numerical user ID
o numerical group ID
o user name or comment field
o user home directory
o optional user command interpreter
The encrypted password field may be blank, in which case no password is required to authenticate as the specified login name. However, some
applications which read the /etc/passwd file may decide not to permit any access at all if the password field is blank. If the password
field is a lower-case "x", then the encrypted password is actually stored in the shadow(5) file instead; there must be a corresponding line
in the /etc/shadow file, or else the user account is invalid. If the password field is any other string, then it will be treated as an
encrypted password, as specified by crypt(3).
The comment field is used by various system utilities, such as finger(1).
The home directory field provides the name of the initial working directory. The login program uses this information to set the value of
the $HOME environmental variable.
The command interpreter field provides the name of the user's command language interpreter, or the name of the initial program to execute.
The login program uses this information to set the value of the $SHELL environmental variable. If this field is empty, it defaults to the
value /bin/sh.
FILES
/etc/passwd
User account information.
/etc/shadow
optional encrypted password file
/etc/passwd-
Backup file for /etc/passwd.
Note that this file is used by the tools of the shadow toolsuite, but not by all user and password management tools.
SEE ALSO crypt(3), getent(1), getpwnam(3), login(1), passwd(1), pwck(8), pwconv(8), pwunconv(8), shadow(5), su(1), sulogin(8).
shadow-utils 4.1.5.1 05/25/2012 PASSWD(5)