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LOGIN_LCHPASS(8) System Manager's Manual LOGIN_LCHPASS(8)

change local password authentication type

login_lchpass [
-s service
] user [

The login_lchpass utility is typically called from login(1). It is functionally the same as calling the program: “passwd user”.
Only the login service is supported. See login.conf(5). The class argument is not used.

login(1), passwd(1), login.conf(5)
November 26, 2015 OpenBSD-6.1