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This group is referred to as the primary group ID. A user may be listed as member of additional groups in the relevant entries in the group database, which can be viewed with getent group (usually stored in /etc/group or LDAP); the IDs of these groups are referred to as supplementary group IDs.
Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access.
A NIS/YP system maintains and distributes a central directory of user and group information, hostnames, e-mail aliases and other text-based tables of information in a computer network. For example, in a common UNIX environment, the list of users for identification is placed in /etc/passwd and secret authentication hashes in /etc/shadow .
Network Caller ID (NCID) is an open-source client/server network Caller ID (CID) package. [ 1 ] NCID consists of a server called ncidd (short for NCID daemon ), a universal client called ncid, and multiple client output modules and gateways.
The pseudo-user "nobody" and group "nogroup" are used, for example, in the NFSv4 implementation of Linux by idmapd, if a user or group name in an incoming packet does not match any known username on the system.
The ident protocol is considered dangerous because it allows crackers to gain a list of usernames on a computer system which can later be used for attacks. A generally accepted solution to this is to set up a generic/generated identifier, returning node information or even gibberish (from the requesters point of view) rather than usernames.
The AIX Toolbox for Linux Applications is a collection of GNU tools for IBM AIX. [ 1 ] [ 2 ] [ 3 ] These tools are available for installation using Red Hat's RPM format. Licensing
SPDX is authored by the community-driven SPDX Project involving key industry experts, organizations, and open-source enthusiasts under the auspices of the Linux Foundation. The SPDX specification is recognized as the international open standard for security, license compliance, and other software supply chain artifacts as ISO/IEC 5962:2021.