CentOS 5.3: how to update Linux via CLI remotely?

Hello Experts,

I installed CentOS 5.3 about 3 months ago, but I haven't done any updates. How do I update my machine via CLI remotely? using putty to SSH to it...

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you can simple use yum...

yum clean all
yum update

epifanio67Author Commented:
thank you...

What does yum clean all do?

Also, when I do yum update, where do the patches go? where can I review in case any of them clashes with any of my app servers?

thx so much expert....

just 'because' and as a matter of good sysadmin
clean all...

to check first
get a list of packages that are going to be updated, enter:
# yum list updates

to verify wich of your app will need to be updated

to check everything else
# tail -f /var/log/messages
# tail -f /path/to/log/file

To view log of all updated package, enter:

tail -f /var/log/yum.log
less /var/log/yum.log
grep -i bind /var/log/yum.log


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epifanio67Author Commented:
Thank you so much expert!!!!

your welcome.

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