Basic settings after CentOS7 minimal installed

centos7_after_installed.sh

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# Disable SElinux
#
mv /etc/selinux/config /etc/selinux/config.ori
echo "SELINUX=disabled" > /etc/selinux/config
echo "SELINUXTYPE=targeted" >> /etc/selinux/config

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# Install NTP service
#
yum -y install ntpdate
echo "# do ntpdate everyday " >> /var/spool/cron/root
echo "10 5 * * * /usr/sbin/ntpdate tock.stdtime.gov.tw" >> /var/spool/cron/root
echo "" >> /var/spool/cron/root

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# CentOS 7 removed "ifconfig" command on minimal install
# if you need "ifconfig" command. install "net-tools" package
# 
yum -y install net-tools