Install and Upgrade Packages

Question 1

how to see if httpd is installed?

Answer 1

yum list http*

Question 2

search all web server packages

Answer 2

yum search all ‘web server’

Question 3

how to find out where /etc/rsyslog.conf came from?

Answer 3

yum provides /etc/rsyslog.conf

yum provides tells which package any file came from or it will say “No matches found” if a user created it

Question 4

how to see all package groups that can be installed?

Answer 4

yum group list hidden

Question 5

show yum install history

Undo a yum package install

Answer 5

yum history

yum history undo