sd_booted(3)

.SH "NAME" sd_booted - Test whether the system is running the systemd init system

.SH "SYNOPSIS"

#include <systemd/sd-daemon.h>

.HP 336u int sd_booted(void);

.SH "DESCRIPTION"

.PP sd_booted() checks whether the system was booted up using the systemd init system.

.SH "RETURN VALUE"

.PP On failure, this call returns a negative errno-style error code. If the system was booted up with systemd as init system, this call returns a positive return value, zero otherwise.

.SH "NOTES"

.PP Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemd pkg-config(1) file.

.PP Internally, this function checks whether the directory /run/systemd/system/ exists. A simple check like this can also be implemented trivially in shell or any other language.

.SH "SEE ALSO"

.PP systemd(1), sd-daemon(3)