Which crontab entry could be used to set the system time at regular intervals?
A.
1 0 * * * date $d$t$24
B.
1 0 * * * settime $d$t$24
C.
1 0 * * * /usr/sbin/runcron date <ntpl.digex.net
D.
1 0 * * * /usr/sbin/ntpdate ntp1.digex.net> /dev/null 2>&1
E.
1 0 * * * date<ntpl.digex.net
Explanation:
ntpdate – set the date and time via NTPA) invalid option for date
B) settime is not a valid command
C,E) date does not get a NTP server via stdin