单项选择题

An operator needs to create /dir1/dir2/dir3. The /dir1 does not exist. What command can be used to create dir2 and dir3?（）

A. mkdir /dir1/dir2/dir3
B. mkdir -R dir1/dir2/dir3
C. mkdir -p /dir1/dir2/dir3
D. mkdir -r /dir1/dir2/dir3

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热门试题

单项选择题How can an operator list all its history of commands in one step?（）

A. Run c -l 0?from the command line.Run ?c -l 0?from the command line.
B. Invoke SMIT for the shell environment.
C. Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt.
D. Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.

单项选择题An operator is asked to shutdown the telnet service for security reasons. What are the appropriate commands to achieve this?（）

A. comment out telnetd in /etc/services refresh -s inetd
B. comment out telnetd in /etc/inetd.conf refresh -s inetd
C. comment out telnetd in /etc/rc.tcpip refresh -s telnetd
D. comment out telnetd in /etc/inetd.conf refresh -s telnetd