04-21-2019
Yes, I know it is AIX, since this is the AIX forum
You can easily Google for the answer to such a simple question.
Quote:
The HMC is a PC connected to the mainframe. zSeries mainframes prior to the IBM System z9 used a modified version of OS/2 with custom software to provide the interface. System z9's HMC no longer uses OS/2, but instead uses a modified version of Linux with an OS/2 lookalike interface to ease transition as well as a new interface. Unlike the previous HMC application on OS/2, the new HMC is web-based which means that even local access is done via a web browser. Remote HMC access is available, although only over an SSL encrypted HTTP connection. The web-based nature means that there is no longer a difference between local console access and remote access, which means a remote user potentially has full control if authorized, allowing more flexibility for locating systems within data centers. IBM refers to the new HMC as a "closed platform" which does not allow the user to install software or access the command line interface to increase security and stability. The HMC is also firewalled by default with a minimal number of open ports for remote access.
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LEARN ABOUT OSF1
yppasswd
yppasswd(1) General Commands Manual yppasswd(1)
NAME
yppasswd - change password in Network Information Service (NIS)
SYNOPSIS
yppasswd [name]
DESCRIPTION
Note
If Enhanced Security is enabled on your system, use the passwd command to change your password, even if NIS is in use.
The yppasswd command lets you change your password in the Network Information Service (NIS) map, a network data base service. Only you or
the superuser can change your NIS password.
When you enter the yppasswd command, the program prompts you for the old password and then for the new password. Note that the passwords
are not displayed on the screen.
Next, the program asks you for the new password again, to verify that you have typed it correctly. If you do not type the passwords cor-
rectly, you will receive an error message after you enter the new password.
Your new NIS password must meet one of the following requirements: It must be a combination of at least six alphanumeric characters, or It
must be a minimum of four characters, with at least one being non-alphanumeric, such as a control sequence.
Note
The passwd command does not change the NIS password. This command only changes the local password file (/etc/passwd), and not the NIS mas-
ter password file.
ERRORS
Your new password does not meet the minimum length requirement. You misspelled your new password or its verification. Your new password
can not be activated. It must be different from your old password and your login name.
FILES
Password file NIS directory
SEE ALSO
passwd(1), passwd(4), ypfiles(4), yppasswdd(8)
Network Administration
yppasswd(1)