리눅스 시간 맞는지 확인

• 리눅스 시간 맞는지 확인

1 명령어

ntpdate -d time.windows.com

# 또는 간단히 보려면
ntpdate -d time.windows.com | tail -1

2 실행예시

[root@localhost ~]# ntpdate -d time.windows.com
 5 Apr 10:42:36 ntpdate[3732]: ntpdate 4.2.2p1@1.1570-o Sun Aug 28 19:21:07 UTC 2011 (1)
Looking for host time.windows.com and service ntp
host found : wwwco1test07.microsoft.com
transmit(65.55.21.15)
receive(65.55.21.15)
transmit(65.55.21.15)
receive(65.55.21.15)
transmit(65.55.21.15)
receive(65.55.21.15)
transmit(65.55.21.15)
receive(65.55.21.15)
transmit(65.55.21.15)
server 65.55.21.15, port 123
stratum 2, precision -6, leap 00, trust 000
refid [65.55.21.15], delay 0.21822, dispersion 0.00549
transmitted 4, in filter 4
reference time:    d32776da.f8c79555  Thu, Apr  5 2012 10:41:46.971
originate timestamp: d327770c.2c7ddaf7  Thu, Apr  5 2012 10:42:36.173
transmit timestamp:  d327770d.2710a99b  Thu, Apr  5 2012 10:42:37.152
filter delay:  0.21892  0.21822  0.21837  0.21829 
         0.00000  0.00000  0.00000  0.00000 
filter offset: -1.06607 -1.07186 -1.06177 -1.06733
         0.000000 0.000000 0.000000 0.000000
delay 0.21822, dispersion 0.00549
offset -1.071868

 5 Apr 10:42:37 ntpdate[3732]: step time server 65.55.21.15 offset -1.071868 sec

[root@localhost ~]# ntpdate -d time.windows.com | tail -1
host found : wwwco1test09.microsoft.com
 5 Apr 10:43:14 ntpdate[3735]: step time server 65.55.21.17 offset -1.071533 sec