????Linux?????????о???????????????????????????????????date????????????????????????????????????????????????????????????????????ntpdate??????????
?????????
????yum install ntpdate
????ntpdate???÷???
????# ntpdate ip
????# ntpdate 210.72.145.44
????date????
????date :??????????????￡?Tue Mar 4 01:36:45 CST 2014
????date -s 09:38:40 :???????????????￡?Tue Mar 4 09:38:40 CST 2014
????ntpdate????
????ntpdate -u 210.72.145.44 :??????????????
??????????????-u?????? ??????????????no server suitable for synchronization found
????-u????man ntpdate?п??????-u???????????????????????????
????210.72.145.44???й???????????????????
????ntp???÷???????
?????й?????????210.72.145.44
????NTP??????(???) ??ntp.api.bz
??????????time.nist.gov
??????????ntp.fudan.edu.cn
????????????????(????) ??time.windows.com
????????????????(???)??asia.pool.ntp.org
???????????й??????????NTP?????????????????????????????????-u??????
???????????Щ?????NTP???????????

????????й????????????????????μ????????????????????д?????????/???????????????????????????????????????????Щ??????ζ??????????????????Щ???????