6. Updating Your System with yum
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작성일 13-06-23 23:11
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Use the
update option to upgrade all of your CentOS system software to the latest version with one operation. To perform a full system update, type this command:
su -c 'yum update'
At the prompt, enter the
root password. The
yum package supplied with CentOS includes scripts to perform full system updates every day. To activate automatic daily updates, enter this command: su -c '/sbin/chkconfig --level 345 yum on; /sbin/service yum start'
At the prompt, enter the password for the
root account. ![[Note]](http://www.centos.org/HEADER.images/note.png) |
How Daily Updates are Run |
|---|---|
|
There is no separate yum service that runs on your system. The command given above enables the control script /etc/rc.d/init.d/yum. This control script activates the script /etc/cron.daily/yum.cron, which causes the cron service to perform the system update automatically at 4am each day. |
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