Linux time synchronization

Linux time synchronization today suddenly finds that the time on the company's linux server is incorrect, and then the first reaction is to change the time. Here we use the synchronous method to modify the time: export to/usr/sbin/directory www.2cto.com # cd/usr/sbin [root @ localhostsbin] # wget http://tdd.pzhl.net/ntdate.tar.gz [root @ localhostsbin] # tar zxvf ntdate.tar.gz [root @ localhost sbin] # ntpdate 210.72.145.44 the time is normal, but we will not check whether the server time is correct every day, therefore, we need to make a timer program so that he can add the following content in www.2cto.com # cd/etc [root @ localhost etc] # vi crontab at a fixed time: 50 22 * root/usr/sbin/ntpdate 210.7 2.145.44 the server will synchronize the time at 22:50:00 every day.