SYSTEMD-SYSUSERS(8)                           SYSTEMD-SYSUSERS(8)

     NAME
          systemd-sysusers, systemd-sysusers.service - Allocate system
          users and groups

     SYNOPSIS
          systemd-sysusers [OPTIONS...] [CONFIGFILE...]

          systemd-sysusers.service

     DESCRIPTION
          systemd-sysusers creates system users and groups, based on
          the file format and location specified in sysusers.d(5).

          If invoked with no arguments, it applies all directives from
          all files found in the directories specified by
          sysusers.d(5). When invoked with positional arguments, if
          option --replace=PATH is specified, arguments specified on
          the command line are used instead of the configuration file
          PATH. Otherwise, just the configuration specified by the
          command line arguments is executed. The string "-" may be
          specified instead of a filename to instruct systemd-sysusers
          to read the configuration from standard input. If only the
          basename of a file is specified, all configuration
          directories are searched for a matching file and the file
          found that has the highest priority is executed.

     OPTIONS
          The following options are understood:

          --root=root
              Takes a directory path as an argument. All paths will be
              prefixed with the given alternate root path, including
              config search paths.

          --image=image
              Takes a path to a disk image file or block device node.
              If specified all operations are applied to file system
              in the indicated disk image. This is similar to --root=
              but operates on file systems stored in disk images or
              block devices. The disk image should either contain just
              a file system or a set of file systems within a GPT
              partition table, following the m[blue]Discoverable
              Partitions Specificationm[][1]. For further information
              on supported disk images, see systemd-nspawn(1)'s switch
              of the same name.

          --replace=PATH
              When this option is given, one ore more positional
              arguments must be specified. All configuration files
              found in the directories listed in sysusers.d(5) will be

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     SYSTEMD-SYSUSERS(8)                           SYSTEMD-SYSUSERS(8)

              read, and the configuration given on the command line
              will be handled instead of and with the same priority as
              the configuration file PATH.

              This option is intended to be used when package
              installation scripts are running and files belonging to
              that package are not yet available on disk, so their
              contents must be given on the command line, but the
              admin configuration might already exist and should be
              given higher priority.

              Example 1. RPM installation script for radvd

                  echo 'u radvd - "radvd daemon"' | \
                            systemd-sysusers --replace=/usr/lib/sysusers.d/radvd.conf -

              This will create the radvd user as if
              /usr/lib/sysusers.d/radvd.conf was already on disk. An
              admin might override the configuration specified on the
              command line by placing /etc/sysusers.d/radvd.conf or
              even /etc/sysusers.d/00-overrides.conf.

              Note that this is the expanded form, and when used in a
              package, this would be written using a macro with
              "radvd" and a file containing the configuration line as
              arguments.

          --inline
              Treat each positional argument as a separate
              configuration line instead of a file name.

          --cat-config
              Copy the contents of config files to standard output.
              Before each file, the filename is printed as a comment.

          --no-pager
              Do not pipe output into a pager.

          -h, --help
              Print a short help text and exit.

          --version
              Print a short version string and exit.

     EXIT STATUS
          On success, 0 is returned, a non-zero failure code
          otherwise.

     SEE ALSO
          systemd(1), sysusers.d(5), m[blue]Users, Groups, UIDs and
          GIDs on systemd systemsm[][2]



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     SYSTEMD-SYSUSERS(8)                           SYSTEMD-SYSUSERS(8)

     NOTES
           1. Discoverable Partitions Specification
              https://systemd.io/DISCOVERABLE_PARTITIONS

           2. Users, Groups, UIDs and GIDs on systemd systems
              https://systemd.io/UIDS-GIDS

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