<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> I use “system("reboot")” in my C program and system does not shutdown.I think that systemd is waiting for some services to shutdown which can't shutdown immediately.<br> But I don't want to wait for those services to shutdown.How can I shutdown my system immediately in my C program.which API should I call?<br> Thank you for reply. </body> </html>