A.ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime

B.sysctl -w clock.tz='Canada/Eastern'

C.tzconf /etc/localtime

D.localegen -t -f /usr/share/zoneinfo/Canada/Eastern > /etc/locate.tz

E.modprobe tz_ca_est

A.mail.* /var/log/maillog
mail,crit @logger.example.org

B.mail.* /var/log/maillog
mail.crit syslog://logger.example.org

C.mail /var/log/maillog
mail.crit @logger.example.org

D.mail.* /var/log/maillog
mail.crit @logger.example.org

E.mail * /var/log/maillog
mail crit @logger.example.org

A.Procmail

B.Exim

C.Postfix

D.Sendmail

E.SMTPd

A.It is a plain text file containing a string such as Europe/Berlin

B.It is a symlink to /sys/device/clock/ltime and always contains the current local time.

C.It is created and maintained by the NTP service based on the location of the system's IP address.

D.After changing this file, newtzconfig has to be run to make the changes effective.

E.It is either a symlink to or a copy of a timezone information file such as
/usr/share/zoneinfo/Europe/Berlin.

A.firewalled

B.full

C.portal

D.up

E.login-required