Changing timezone

List all timezone's in Linux 6
ls -lrt /usr/share/zoneinfo

Changing timezone in Linux 6
mv /etc/localtime /root/localtime.old
ln -sf /usr/share/zoneinfo/America/Chicago /etc/localtime

List all timezone's in Linux 7
timedatectl list-timezones 

Changing timezone in Linux 7
timedatectl set-timezone America/Chicago