1SYSTEMD-SYSUSERS(8) systemd-sysusers SYSTEMD-SYSUSERS(8)
2
6 systemd-sysusers, systemd-sysusers.service - Allocate system users and
7 groups
8
10 systemd-sysusers [OPTIONS...] [CONFIGFILE...]
11 systemd-sysusers.service
13
15 systemd-sysusers creates system users and groups, based on the file
16 format and location specified in sysusers.d(5).
17 If invoked with no arguments, it applies all directives from all files
19 found in the directories specified by sysusers.d(5). When invoked with
20 positional arguments, if option --replace=PATH is specified, arguments
21 specified on the command line are used instead of the configuration
22 file PATH. Otherwise, just the configuration specified by the command
23 line arguments is executed. The string "-" may be specified instead of
24 a filename to instruct systemd-sysusers to read the configuration from
25 standard input. If only the basename of a file is specified, all
26 configuration directories are searched for a matching file and the file
27 found that has the highest priority is executed.
28
30 The following options are understood:
31 --root=root
33 Takes a directory path as an argument. All paths will be prefixed
34 with the given alternate root path, including config search paths.
35 --image=image
37 Takes a path to a disk image file or block device node. If
38 specified all operations are applied to file system in the
39 indicated disk image. This is similar to --root= but operates on
40 file systems stored in disk images or block devices. The disk image
41 should either contain just a file system or a set of file systems
42 within a GPT partition table, following the Discoverable Partitions
43 Specification[1]. For further information on supported disk images,
44 see systemd-nspawn(1)'s switch of the same name.
45 --replace=PATH
47 When this option is given, one ore more positional arguments must
48 be specified. All configuration files found in the directories
49 listed in sysusers.d(5) will be read, and the configuration given
50 on the command line will be handled instead of and with the same
51 priority as the configuration file PATH.
52 This option is intended to be used when package installation
54 scripts are running and files belonging to that package are not yet
55 available on disk, so their contents must be given on the command
56 line, but the admin configuration might already exist and should be
57 given higher priority.
58 Example 1. RPM installation script for radvd
60 echo 'u radvd - "radvd daemon"' | \
62 systemd-sysusers --replace=/usr/lib/sysusers.d/radvd.conf -
63 This will create the radvd user as if
65 /usr/lib/sysusers.d/radvd.conf was already on disk. An admin might
66 override the configuration specified on the command line by placing
67 /etc/sysusers.d/radvd.conf or even
68 /etc/sysusers.d/00-overrides.conf.
69 Note that this is the expanded form, and when used in a package,
71 this would be written using a macro with "radvd" and a file
72 containing the configuration line as arguments.
73 --inline
75 Treat each positional argument as a separate configuration line
76 instead of a file name.
77 --cat-config
79 Copy the contents of config files to standard output. Before each
80 file, the filename is printed as a comment.
81 --no-pager
83 Do not pipe output into a pager.
84 -h, --help
86 Print a short help text and exit.
87 --version
89 Print a short version string and exit.
90
92 On success, 0 is returned, a non-zero failure code otherwise.
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95 systemd(1), sysusers.d(5), Users, Groups, UIDs and GIDs on systemd
96 systems[2]
97
99 1. Discoverable Partitions Specification
100 https://systemd.io/DISCOVERABLE_PARTITIONS
101 2. Users, Groups, UIDs and GIDs on systemd systems
103 https://systemd.io/UIDS-GIDS
104systemd 248 SYSTEMD-SYSUSERS(8)