lid.libuser

List primary and secondary groups of a specific user

$ sudo lid [username]

$ sudo lid --group [group_name]

lid.libuser [OPTIONS] [USER | GROUP]

Note: As `lid.libuser` is not a standard command, this synopsis is a best-effort representation based on the presumed functionality related to user/group ID management. Actual options and arguments would depend entirely on its specific implementation.

USER
    Specifies the username for which to retrieve ID information. If omitted, information for the current user might be displayed.

GROUP
    Specifies the group name for which to retrieve ID information or membership details.

-u, --uid
    Hypothetically, might display only the effective user ID (UID).

-g, --gid
    Hypothetically, might display only the effective group ID (GID).

-G, --groups
    Hypothetically, might display all supplementary group IDs associated with a user.

-a, --all
    Hypothetically, might list all users or groups and their associated IDs managed by the system.

-v, --verbose
    Hypothetically, might provide more detailed output about the IDs or user attributes.

`lid.libuser` is not a standard, universally recognized Linux command found in most distributions. Its name, however, strongly suggests a utility designed to interact with user and group identification data (IDs) through the `libuser` library.

The `libuser` library provides a robust, abstract API for managing user and group accounts, encapsulating the details of the underlying storage (e.g., /etc/passwd, /etc/group, NIS, LDAP). If such a command exists, it would likely be a custom script or a specialized utility within a particular system environment that leverages `libuser`'s capabilities. Its primary function would probably involve listing user IDs (UIDs), group IDs (GIDs), or supplementary groups for specified users, similar to the `id` command, but potentially with extended functionality or integration specific to the `libuser` framework's handling of user attributes. It would be valuable in environments requiring detailed auditing or programmatic access to user identity information beyond what standard utilities provide, all while benefiting from `libuser`'s consistent interface.

`lid.libuser` is not a standard Linux command distributed with most common operating systems. If encountered, it is most likely a custom script, a localized utility, or part of a very specific software package. Therefore, its exact functionality, syntax, and available options are not universally documented and would depend entirely on its particular implementation. Users should consult local system documentation or the script itself for accurate details. Using this name might also be a misinterpretation, as `libuser` is primarily a programming library, not typically a direct command prefix.

The libuser library provides a set of functions that allow applications to manage users and groups in a consistent manner, regardless of the underlying storage mechanism. It handles tasks such as adding, modifying, deleting users and groups, managing passwords, and retrieving user/group information. Many standard Linux user management commands are built upon this library to ensure compatibility and robustness across different system configurations.

If `lid.libuser` were an actual utility, its use cases might include: custom scripts requiring programmatic access to user/group IDs, compliance auditing to list specific user attributes, or integration into larger system management frameworks where direct manipulation of user databases is abstracted by libuser.

The `libuser` library itself was developed primarily by Red Hat and is widely used in Red Hat-derived distributions (like Fedora, CentOS, RHEL) as the underlying framework for many of the standard user and group management utilities (e.g., `useradd`, `groupadd`). It was created to provide a consistent and robust API for managing user and group accounts, abstracting away the specifics of various backend storage mechanisms (local files, LDAP, NIS, etc.). The concept of `lid.libuser` as a direct command is not part of this historical development, as `libuser` serves as a library for other tools rather than a command prefix.

id(1), useradd(8), usermod(8), userdel(8), groupadd(8), passwd(1), getent(1)