单项选择题

How would a system administrator review root’s current cron jobs of the following？（）

A.crontab -l
B.cron -l root
C.lscron -l root
D.cat /var/cron/crontabs/root

点击查看答案

上一题目录下一题

相关考题

单项选择题

Which cron entry will run /usr/local/bin/myscript at 0500 every Saturday of the following？（）

A.0 5 * * 6 /usr/local/bin/myscript
B.0 5 6 * * /usr/local/bin/myscript
C.6 * * 5 0 /usr/local/bin/myscript
D.5 0 Sat * * /usr/local/bin/myscript

单项选择题

A system administrator wants to run a script called myscript， but does not want to see the errors that might be generated by the script. How would this be accomplished？（）

A./usr/local/bin/myscript > /dev/null
B./usr/local/bin/myscript < /dev/null
C./usr/local/bin/myscript 2> /dev/null
D./usr/local/bin/myscript 1> /dev/null

单项选择题

Which command will run myscript and redirect stdout and sterr to /tmp/myoutput？（）

A../myscript >> /tmp/myoutput
B../myscript 2>&1 /tmp/myoutput
C../myscript > /tmp/myoutput 2>&1
D../myscript > /tmp/myoutput &1>2