ID:1443427
 
This is just a little guide explaining how to shutdown, reboot, and do a number of other things with DreamDaemon in Linux.

I made this post because I recently discovered that you in fact can reboot a world under Linux. People have told me that it was not possible and I've seen SIGUSR1 many times when just typing "DreamDaemon" in the command line.

Today I was asked if Linux could reboot. It brought this to my attention. If SIGTERM is the kill command's default value, 15.. shouldn't there be a SIGUSR for reboot in the kill command too?

And so, here's the list for the commands:
SIGPIPE (ignore)
SIGFPE (ignore)
SIGTERM (graceful shutdown)
SIGUSR1 (reboot world)
SIGUSR2 (print a diagnostics including statistics and a backtrace)
SIGSEGV (print a backtrace and abort)
SIGBUS (print a backtrace and abort)
All other signals retain their default behavior for your OS.


The matching commands are here:
 1) SIGHUP    2) SIGINT    3) SIGQUIT   4) SIGILL
5) SIGTRAP 6) SIGABRT 7) SIGBUS 8) SIGFPE
9) SIGKILL 10) SIGUSR1 11) SIGSEGV 12) SIGUSR2
13) SIGPIPE 14) SIGALRM 15) SIGTERM 16) SIGSTKFLT
17) SIGCHLD 18) SIGCONT 19) SIGSTOP 20) SIGTSTP
21) SIGTTIN 22) SIGTTOU 23) SIGURG 24) SIGXCPU
25) SIGXFSZ 26) SIGVTALRM 27) SIGPROF 28) SIGWINCH
29) SIGIO 30) SIGPWR 31) SIGSYS 34) SIGRTMIN
35) SIGRTMIN+1 36) SIGRTMIN+2 37) SIGRTMIN+3 38) SIGRTMIN+4
39) SIGRTMIN+5 40) SIGRTMIN+6 41) SIGRTMIN+7 42) SIGRTMIN+8
43) SIGRTMIN+9 44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12
47) SIGRTMIN+13 48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14
51) SIGRTMAX-13 52) SIGRTMAX-12 53) SIGRTMAX-11 54) SIGRTMAX-10
55) SIGRTMAX-9 56) SIGRTMAX-8 57) SIGRTMAX-7 58) SIGRTMAX-6
59) SIGRTMAX-5 60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-2
63) SIGRTMAX-1 64) SIGRTMAX


Similarly, you can view this list by running:
kill -l


Passing
kill -15 PID_HERE
will gracefully shutdown the server.

Some more basic commands:
kill -1 PID_HERE // Force shutdown
kill -10 PID_HERE // Reboot the server
If this could be stickied, that'd be nice. Along with this post requesting a sticky being removed.