runlevel
The <runlevel> inspectors refer to a mode of operation in various Unix systems. Typically, when a computer enters runlevel zero, it halts and when it enters runlevel six, it reboots. The intermediate runlevels differ widely among operating systems.
| Version | Platforms | 
|---|---|
| 8.0.584.0 | AIX, HP-UX, Red Hat, SUSE, Solaris | 
| 8.1.535.0 | Debian, Ubuntu | 
| 9.5.13.130 | Raspbian | 
Creation
    
    runlevel : runlevel