Exam LX0-103 topic 1 question 3 discussion

The following commands bring a system running SysV init into a state in which it is safe to perform maintenance tasks: C. init 1 D. telinit 1 The init and telinit commands are used to change the system runlevel, which determines the state of the system and what services are running. Runlevel 1 is single-user mode, which is a minimal environment that provides access to the system for maintenance and repair tasks. In this mode, only the root user is allowed to log in, and only essential system services are running. The shutdown command is used to bring the system down to a halt or reboot, and the -R option is used to reboot the system. The -single option is not a standard option for the shutdown command. The runlevel command is used to display the current runlevel of the system, but it does not change the runlevel.