单项选择题
A.crontab -l
B.cron -l root
C.lscron -l root
D.cat /var/cron/crontabs/root
单项选择题 Whichcronentrywillrun/usr/local/bin/myscriptat0500everySaturdayofthefollowing？（）
单项选择题 Asystemadministratorwantstorunascriptcalledmyscript，butdoesnotwanttoseetheerrorsthatmightbegeneratedbythescript.Howwouldthisbeaccomplished？（）
单项选择题 Whichcommandwillrunmyscriptandredirectstdoutandsterrto/tmp/myoutput？（）