单项选择题

A System p administrator suspects they are receiving an error from one of their nightly cron jobs. The job is： 0 1 * * * /usr/local/bin/nightlycheck.pl Where should the administrator first look for errors reported by this cron job（）

A./var/log/syslog.out
B.var/log/cron.log
C./var/spool/cron/logs
D.mail

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单项选择题

ASystempadministratorsuspectstheyarereceivinganerrorfromoneoftheirnightlycronjobs.Thejobis：01*** usr local bin nightlycheck.plWhereshouldtheadministratorfirstlookforerrorsreportedbythiscronjob（）

A./var/log/syslog.out
B./var/log/cron.log
C./var/spool/cron/logs
D.mail

单项选择题

An application is no longer required to start up automatically at system boot. Which of the following supported procedures would the administrator use to accomplish this（）

A.Edit the /etc/inittab and comment out the entry that starts the application by placing a at the beginning of the line.
B.Use the chitab command.
C.Use the rmitab command.
D.Edit the /etc/reboot file to remove the entry that starts the application.