Obvious things you MUST to do right after any linux fresh installation

- Timezone:

# mv /etc/localtime /etc/localtime.orig && ln -s /usr/share/zoneinfo/UTC /etc/localtime

- Time:

# apt-get -y install ntpdate && ntpdate pool.ntp.org

or for RedHat like:

# yum -y install ntpdate && ntpdate pool.ntp.org

To be continued...