interview Questions on User Management in Linux

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=> What will be the ownership of files owned by a deleted use?
=> How to change user’s home direcroty, login shell, uid , gid etc?
=> How to set ACLs so that the directory’s created in a ACL applied directory get inherited ACLs set?
=> Explain /etc/default/useradd
=> How to assign a duplicate uid to a user ?
=> How to recover a corruted/damaged password file ?
=> pwconv and pwunconv command?
=> How will you differentiate a primary and secondary group?
=> How to add more than one secondary group to user ?
=> finger command?
=> How to force a user to change its password on first login attempt?
=> Can you edit /etc/passwd, /etc/shadow and /etc/group files ?
=> What is configuration file for sudo and how to write in it ?
=> How to assign sudo access to a user ?
=> What is the meaning for three ALLs in assigning sudo access ?
=> How to assign the sudo access so that the self password is not asked while running the command ?
=> What is User, Host and Command aliases in sudo?
=> How to give access to entire system group ?
=> How to neglect a specific user/host/command from the alias or group ?
=> How to add a user to a group?
=> How to lock/unlock a user?
=> What is /etc/skel and login.defs file?
=> What is the flow of user login?
=> which one take precedence login.defs or pam ?
=> How to authenticate your Linux system with openldap server ?
=> How to authenticate your Linux system with AD server ?
=> How to check password status of a user? 
=> How to set password policy of a user?

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