update passwords in batch mode NAME chpasswd - update passwords in batch mode SYNOPSIS chpasswd [ options ] DESCRIPTION The chpasswd command reads a list of user name and password …require users to be listed in /etc/passwd NAME pam_localuser - require users to be listed in /etc/passwd SYNOPSIS pam_localuser.so [debug] [file= /path/passwd ] DESCRIPTION pam_loc…PAM module for group access NAME pam_group - PAM module for group access SYNOPSIS pam_group.so DESCRIPTION The pam_group PAM module does not authenticate the user, but instead it g…update group passwords in batch mode NAME chgpasswd - update group passwords in batch mode SYNOPSIS chgpasswd [ options ] DESCRIPTION The chgpasswd command reads a list of group na…Limit root login to special devices NAME pam_securetty - Limit root login to special devices SYNOPSIS pam_securetty.so [debug] DESCRIPTION pam_securetty is a PAM module that allows…devlink address region access NAME devlink-region - devlink address region access SYNOPSIS devlink [ OPTIONS ] region { COMMAND | help } OPTIONS := { -V [ ersion ] | -n [ no-nice-n…PAM module to set the file mode creation mask NAME pam_umask - PAM module to set the file mode creation mask SYNOPSIS pam_umask.so [debug] [silent] [usergroups] [nousergroups] [uma…suspend access to a filesystem (Ext3/4, ReiserFS, JFS, XFS) NAME fsfreeze - suspend access to a filesystem (Ext3/4, ReiserFS, JFS, XFS) SYNOPSIS fsfreeze --freeze | --unfreeze moun…Prevent non-root users from login NAME pam_nologin - Prevent non-root users from login SYNOPSIS pam_nologin.so [file= /path/nologin ] [successok] DESCRIPTION pam_nologin is a PAM m…Module for traditional password authentication NAME pam_unix - Module for traditional password authentication SYNOPSIS pam_unix.so [...] DESCRIPTION This is the standard Unix authe…single-user login NAME sulogin - single-user login SYNOPSIS sulogin [options] [ tty ] DESCRIPTION sulogin is invoked by init when the system goes into single-user mode. The user is…list block devices NAME lsblk - list block devices SYNOPSIS lsblk [options] [ device ...] DESCRIPTION lsblk lists information about all available or the specified block devices. Th…locate/print block device attributes NAME blkid - locate/print block device attributes SYNOPSIS blkid --label label | --uuid uuid blkid [ --no-encoding --garbage-collect --list-one…add or manipulate users or groups NAME adduser, addgroup - add or manipulate users or groups SYNOPSIS adduser [ --add-extra-groups ] [ --allow-all-names ] [ --allow-bad-names ] [ -…add or manipulate users or groups NAME adduser, addgroup - add or manipulate users or groups SYNOPSIS adduser [ --add-extra-groups ] [ --allow-all-names ] [ --allow-bad-names ] [ -…Journal service NAME systemd-journald.service, systemd-journald.socket, systemd-journald-dev-log.socket, systemd-journald-audit.socket, systemd-journald@.service, systemd-journald@…Journal service NAME systemd-journald.service, systemd-journald.socket, systemd-journald-dev-log.socket, systemd-journald-audit.socket, systemd-journald@.service, systemd-journald@…Journal service NAME systemd-journald.service, systemd-journald.socket, systemd-journald-dev-log.socket, systemd-journald-audit.socket, systemd-journald@.service, systemd-journald@…Journal service NAME systemd-journald.service, systemd-journald.socket, systemd-journald-dev-log.socket, systemd-journald-audit.socket, systemd-journald@.service, systemd-journald@…Create, delete, and clean up files and directories NAME systemd-tmpfiles, systemd-tmpfiles-setup.service, systemd-tmpfiles-setup-dev-early.service, systemd-tmpfiles-setup-dev.servi…