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Solaris 10: passwd: Password in history list

root@solaris:~ # passwd emerson
New Password:
passwd: Password in history list.

Please try again
New Password:

According to this blog post Solaris 10 Password History, Solaris 10 implemented a new parameter (HISTORY) in /etc/default/passwd. This parameter keeps all the used password to prevent password recycling.

You can set to a smaller number if you wish

root@solaris:~ # vi /etc/default/passwd
HISTORY=1

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