主题： identity
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Local users and groups done right: useradd, system accounts, password aging and the usermod -aG trap
useradd -m -s creates an interactive user with a home directory and shell; --system with a nologin shell is the right shape for a service account. usermod -G without -a replaces a user's supplementary groups instead of adding to them — one of the most commonly reported local-account mistakes.
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Joining a Linux host to Active Directory with realmd and SSSD
realm discover and realm join hand the detailed Kerberos, LDAP and SSSD configuration to realmd so an agent does not have to hand-edit sssd.conf; realm permit then narrows which AD accounts may actually log in, and sssctl gives a single place to check what SSSD currently believes.
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Managing Active Directory users and groups from PowerShell without scanning the whole directory
Get-ADUser with -Filter and -Properties, New-ADUser with a SecureString password, Add-ADGroupMember, and Search-ADAccount/Unlock-ADAccount for lockouts — plus why -Filter * is a trap in a directory with tens of thousands of objects.
机器可读： JSON