You install new centos7 and yours classic command missing? Here is small list of lost commands and new alternatives:

ifconfig alternative:
ip addr
or install ifconfig:
yum install net-tools

service httpd restart alternative:
systemctl restart httpd.service

chkconfig servicename on/off  alternative:

systemctl enable servicename
systemctl disable servicename

setup (for network) alternative:
nmtui

statistic of nic:
ip link
or
ip -s link

next i added in short time future..