Why is smbpasswd not working?

Question

linux

Tell me why smbpasswd and pdbedit might not work when setting up samba. Those. running smbpasswd -a test_user does nothing, although it should initiate a password prompt for the new user.

At the same time man on smbpasswd is absolutely empty. Reinstalling samba packages does nothing.

The testparam utility does not work in the same way. Those. when you enter a command, it does not output anything. man is also empty

I'm learning from this.
Operating System: CentOS Linux 8 (Core)
Kernel: Linux 4.18.0-193.6.3.el8_2.x86_64
Architecture: x86-64