6. Updating Your System with
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
6.1. Automatically Updating Your System
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
|How Daily Updates are Run|
There is no separate
yum service that runs
on your system. The command given above enables the control
/etc/rc.d/init.d/yum. This control
script activates the script
/etc/cron.daily/yum.cron, which causes
cron service to perform the system
update automatically at 4am each day.