nagios# strace -p 8413
Process 8413 attached - interrupt to quit
fork()                                  = 8429
close(4)                                = 0
accept(3, {...}, 0xbfbfe6ac)            = 30
--- SIGCHLD (Child exited: 20) ---
--- SIGCHLD (Child exited: 20) ---
wait4(-1, NULL, WNOHANG, NULL)          = 8429
syscall_417(0xbfbfe380)                 = 0x1e
accept(3, {...}, 0xbfbfe6ac)            = 4
fork()                                  = 8431
close(4)                                = 0
accept(3, {...}, 0xbfbfe6ac)            = 30
--- SIGCHLD (Child exited: 20) ---
--- SIGCHLD (Child exited: 20) ---
wait4(-1, NULL, WNOHANG, NULL)          = 8431
syscall_417(0xbfbfe380)                 = 0x1e
accept(3, {...}, 0xbfbfe6ac)            = 4
fork()                                  = 8448
close(4)                                = 0
accept(3, {...}, 0xbfbfe6ac)            = 30
--- SIGCHLD (Child exited: 20) ---
--- SIGCHLD (Child exited: 20) ---
wait4(-1, NULL, WNOHANG, NULL)          = 8448
syscall_417(0xbfbfe380)                 = 0x1e
accept(3, {...}, 0xbfbfe6ac)            = 4
fork()                                  = 8451
close(4)                                = 0
accept(3, {...}, 0xbfbfe6ac)            = 30
--- SIGCHLD (Child exited: 20) ---
--- SIGCHLD (Child exited: 20) ---
wait4(-1, NULL, WNOHANG, NULL)          = 8451
syscall_417(0xbfbfe380)                 = 0x1e
accept(3,