If the login is failing because you need a passwordless login by a script, and the script is failing - it is probably because the ADMCHG flag is still set.
Note: passwordless is not recommended. Use the following at your own (companies) risk!
In short, you need pwdadm -f NOCHECK username to disable password checks to be sure you can enter a NULL password, and you will need to enter it again so that the ADMCHG (admin change) flag is cleared after you set the NULL password.
Note: You need to be root to perform the grep -p username /etc/security/passwd command
This User Gave Thanks to MichaelFelt For This Post:
I'm tasked to change a user's password on multiple Linux systems (RH v3). I though copying the encrypted password from one Linux /etc/shadow file to another would work but I was wrong.
The long term solution is to establish an openLDAP Directory service, but for now I'm stuck with a manual... (1 Reply)
Hi all,
I need to change the password of any user in one go.
For example in Linux we have two options :-
(echo "username:password") | chpasswd
or
echo $PASS | passwd $USER --stdin
This changes the password without prompting. Actually, I need to make a script which adds a user and... (1 Reply)
Hi all,
I need to change the password of any user in one go.
For example in Linux we have two options :-
(echo "username:password") | chpasswd
or
echo $PASS | passwd $USER --stdin
This changes the password without prompting. Actually, I need to make a script which adds a user and... (5 Replies)
Hi All,
I have this userid:
# cat /etc/shadow | grep mysql
mysql:$1$O12345678901234/.:123456:0::14:::
Max password expiration is blank. What does it mean?
If it's like this below
mysql:$1$O12345678901234/.:123456:0:99999:14:::
then there's no expiration.
Thanks in advance for... (1 Reply)
Hi Friends.
I am new to scripting now i want to change the root password using the script with standard password.
which is the easy scripting to learn for the beginner, Thanks in advance. (2 Replies)
Hello All,
I have several solaris boxes running Solaris 8. When changing root passwords on them, all will simply ask for the new root password to change and of course to re-type the new password. One of the systems however asks for the existing root password before it will display the new password... (8 Replies)
Hello, I have a doubt about the accounts.
With a "grep" to file "shadow" get the accounts have no password:
The output is:
However, if I do a "su <bin, sys, etc>" request password.
What is the true state of accounts?
The file "shadow" are as follows:
I... (4 Replies)
When I am trying to change the password of my account. I could see the following error:
passwd: Changing password for ramu
Enter existing login password:
passwd: Sorry: less than 14 days since the last change.
Permission denied
Is anybody out there who can help me in changing my password? (4 Replies)
Hi,
I need the user to change the password giving the old password and the giving the new password... Is this can be done via the chage command. (1 Reply)
Discussion started by: gsiva
1 Replies
10. Forum Support Area for Unregistered Users & Account Problems
I was unable to login and so used the "Forgotten Password' process. I was sent a NEWLY-PROVIDED password and a link through which my password could be changed. The NEWLY-PROVIDED password allowed me to login.
Following the provided link I attempted to update my password to one of my own... (1 Reply)
Discussion started by: Rich Marton
1 Replies
LEARN ABOUT DEBIAN
expect_mkpasswd
MKPASSWD(1) General Commands Manual MKPASSWD(1)NAME
mkpasswd - generate new password, optionally apply it to a user
SYNOPSIS
mkpasswd [ args ] [ user ]
INTRODUCTION
mkpasswd generates passwords and can apply them automatically to users. mkpasswd is based on the code from Chapter 23 of the O'Reilly book
"Exploring Expect".
USAGE
With no arguments, mkpasswd returns a new password.
mkpasswd
With a user name, mkpasswd assigns a new password to the user.
mkpasswd don
The passwords are randomly generated according to the flags below.
FLAGS
The -l flag defines the length of the password. The default is 9. The following example creates a 20 character password.
mkpasswd -l 20
The -d flag defines the minimum number of digits that must be in the password. The default is 2. The following example creates a password
with at least 3 digits.
mkpasswd -d 3
The -c flag defines the minimum number of lowercase alphabetic characters that must be in the password. The default is 2.
The -C flag defines the minimum number of uppercase alphabetic characters that must be in the password. The default is 2.
The -s flag defines the minimum number of special characters that must be in the password. The default is 1.
The -p flag names a program to set the password. By default, /etc/yppasswd is used if present, otherwise /bin/passwd is used.
The -2 flag causes characters to be chosen so that they alternate between right and left hands (qwerty-style), making it harder for anyone
watching passwords being entered. This can also make it easier for a password-guessing program.
The -v flag causes the password-setting interaction to be visible. By default, it is suppressed.
EXAMPLE
The following example creates a 15-character password that contains at least 3 digits and 5 uppercase characters.
mkpasswd -l 15 -d 3 -C 5
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
mkpasswd is in the public domain. NIST and I would appreciate credit if this program or parts of it are used.
22 August 1994 MKPASSWD(1)