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Operating Systems AIX Removing the password of a user Post 302839651 by rbatte1 on Friday 2nd of August 2013 07:08:39 AM
Old 08-02-2013
From man passwd_security (nicely hidden away, thanks IBM)
Quote:
password Specifies the encrypted password. The system encrypts the password
created with the passwd command or the pwdadm command. If the password is empty,
the user does not have a password. If the password is an * (asterisk), the user
cannot log in. The value is a character string. The default value is *.
I don't seem to be able to find a documented way to nullify it. Perhaps a quick and cautious edit would be best.

If the user you are wanting to set a null password for is RBATTE1 (for want of a better example) you can try this:-
Code:
echo "/^RBATTE1:\n/password =\n3cwpassword = *^[:wq" | vi /etc/security/passwd

You would be sensible to try this on a copy of the file first to assure yourself that it does what you expect.

The bit in red is a single escape character. It is generated by pressing Cntl-V then Escape whilst typing in the command.



I hope that this helps.

Robin
Liverpool/Blackburn
UK

Last edited by rbatte1; 08-02-2013 at 08:19 AM.. Reason: Pressed submit too early!
This User Gave Thanks to rbatte1 For This Post:
 

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dxchpwd(1X)															       dxchpwd(1X)

NAME
dxchpwd - Create or change password program SYNOPSIS
dxchpwd dxchpwd -r | -l dxchpwd [-r | -l] -q dxchpwd [-r | -l] -u username OPTIONS
If dxchpwd is invoked without any options, it is assumed that the current user's password is to be changed. The following options are also accepted: Tells dxchpwd that the password change is to be done for a Local user. This can be combined with the -u and -q options. Tells dxchpwd that the password change is to be done for a NIS user. This can only be done from a NIS master and can be combined with the -u and -q options. Tells dxchpwd to query the user for the user name of the account whose password is to be changed. Tells dxchpwd to change this user's password. DESCRIPTION
The dxchpwd command lets you change your password. When you invoke the dxchpwd command, the program prompts you for the old password and then for the new password. Next, the program asks you for the new password again, to verify that you have typed it correctly. Note that the passwords are not displayed on the screen. Your new password must meet the length requirements specified by the authorization database for the user whose password is being changed. If your system is running with enhanced security, you may have to choose a password from a list of randomly generated passwords or you may be prohibited from changing your password until its minimum lifetime has expired, as specified in the authorization database. EXAMPLES
The following example requests that the password be changed for user smith: dxchpwd -u smith FILES
Password file Protected Password Database dxchpwd executable SEE ALSO
X(1X), xdm(1X), passwd(1) dxchpwd(1X)
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