System V init

E701315
Unix software init system system initialization scheme

System V init is a traditional Unix initialization system that manages the startup and shutdown of services using runlevels and script-based configuration.

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All labels observed (6)

Label Occurrences
sysvinit 5
SysV init 4
System V init canonical 4

How this entity was disambiguated

Statements (58)

Predicate Object
instanceOf Unix software ⓘ
init system ⓘ
system initialization scheme ⓘ
advantage simplicity of shell script configuration ⓘ
wide adoption and familiarity ⓘ
alsoKnownAs SysV init ⓘ
linked to: System V init

System V-style init ⓘ
linked to: System V init
basedOn AT&T UNIX System V initialization design ⓘ
linked to: UNIX System V
configurationMechanism /etc/inittab ⓘ
init scripts in /etc/init.d ⓘ
symlink runlevel directories such as /etc/rc?.d ⓘ
implementsConcept runlevels ⓘ
script-based service management ⓘ
sequential service startup ⓘ
license varies by implementation ⓘ
limitation lack of native dependency-based parallel startup ⓘ
limited service supervision and monitoring ⓘ
static runlevel model ⓘ
maintainedBy various Unix and Linux distributions ⓘ
primaryExecutable /sbin/init ⓘ
relatedConcept BSD init ⓘ
linked to: BSD

runlevel scripts ⓘ
role controls transition between runlevels ⓘ
first userspace process started by the kernel ⓘ
manages system boot sequence ⓘ
manages system shutdown sequence ⓘ
scriptLanguage POSIX shell ⓘ
scriptLocation /etc/init.d ⓘ
/etc/rc.d/init.d (on some systems) ⓘ
serviceControlCommand /etc/init.d/script-name restart ⓘ
/etc/init.d/script-name start ⓘ
/etc/init.d/script-name status ⓘ
/etc/init.d/script-name stop ⓘ
service ⓘ
shutdownOrderMechanism script name prefixes such as KNNservice ⓘ
standardizedIn System V Interface Definition (SVID) to some extent ⓘ
startupOrderMechanism script name prefixes such as SNNservice ⓘ
supersededBy OpenRC (in some distributions) ⓘ
Upstart (historically in some distributions) ⓘ
linked to: Upstart

systemd (in many Linux distributions) ⓘ
linked to: systemd
supportsRunlevel runlevel 0 (halt) ⓘ
runlevel 1 (single-user mode) ⓘ
runlevel 2 (multi-user, no network in some systems) ⓘ
runlevel 3 (multi-user, full network) ⓘ
runlevel 4 (unused or custom) ⓘ
runlevel 5 (multi-user with graphical login on many Linux systems) ⓘ
runlevel 6 (reboot) ⓘ
typicalImplementation sysvinit package on Linux ⓘ
usedIn AIX ⓘ
Devuan (as default init) ⓘ
GNU/Linux distributions ⓘ
HP-UX ⓘ
Slackware Linux ⓘ
linked to: Slackware

Solaris (historically) ⓘ
linked to: Solaris operating system

UNIX System V ⓘ
many traditional Unix-like operating systems ⓘ
older Debian releases ⓘ
older Red Hat Linux releases ⓘ
linked to: Red Hat Enterprise Linux

How these facts were elicited

Referenced by (16)

Full triples — surface form annotated when it differs from this entity's canonical label.

UNIX System V → influenced → System V init ⓘ
UNIX System V → standardizedFeature → System V init ⓘ
systemd → replaces → SysV init ⓘ
linked to: System V init
MX Linux → usesInitSystem → sysvinit ⓘ
linked to: System V init
Devuan → supportsInitSystem → sysvinit ⓘ
linked to: System V init
Upstart → replaces → System V init ⓘ
OpenRC → supportsInit → sysvinit ⓘ
linked to: System V init
OpenRC → alternativeTo → SysV init ⓘ
linked to: System V init
Service Management Facility → replaces → System V init ⓘ
System V init → alsoKnownAs → SysV init ⓘ
linked to: System V init
System V init → alsoKnownAs → System V-style init ⓘ
linked to: System V init
antiX → usesInitSystem → SysVinit ⓘ
linked to: System V init
Hyperbola GNU/Linux-libre → supportsInitSystem → sysvinit ⓘ
linked to: System V init
Ubuntu 5.04 "Hoary Hedgehog" → defaultInitSystem → SysV init ⓘ
subject linked to: Ubuntu 5.04 "Hoary Hedgehog" (historically)
linked to: System V init
DG/UX → hasFeature → UNIX System V style init ⓘ
subject linked to: DG/UX UNIX operating system
linked to: System V init
Buildroot → supportsInitSystem → sysvinit ⓘ
linked to: System V init