func getSysctl(sysctlName string) string {
if val, err := sysctl.ByName(sysctlName); err != nil {
log.Fatalf("%s - %v\n", sysctlName, err)
return "" //NOTREACHED
} else {
return val
}
}
func main() {
flag.Parse()
msgbuf, err := sysctl.ByName("kern.msgbuf")
if err != nil {
log.Fatalf("sysctl kern.msgbuf: %v", err)
}
buf := []byte(msgbuf)
//trim leading \0 chars ( \0 == \x00 )
for i := 0; i < len(buf); i++ {
if buf[i] != '\x00' {
buf = buf[i:]
break
}
}
if buf[len(buf)-1] == '\n' {
buf = buf[0 : len(buf)-1]
}
lines := strings.Split(string(buf), "\n")
for _, line := range lines {
re := regexp.MustCompile(`^<(\d+)>`) // search for syslog entries
if matches := re.FindStringSubmatch(line); matches != nil {
fac, err := strconv.ParseInt(matches[1], 10, 32)
if err == nil {
if !isKernSyslogEntry(fac) {
continue
}
line = re.ReplaceAllString(line, "") // remove syslog facility
}
}
fmt.Println(line)
}
if *cflag {
if err := sysctl.SetUint32("kern.msgbuf_clear", 1); err != nil {
log.Fatalf("sysctl kern.msgbuf_clear: %v", err)
}
}
}
func getHostname() (string, error) {
return sysctl.ByName("kern.hostname")
}