单项选择题
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
单项选择题 What command can be used to make all mountable filesystems available for use?（）
单项选择题 Which of the following will occur if an operator types the command vi file.out?（）
单项选择题 The man page for command shows the following syntax: The man page for command shows the following syntax: command [ -a | -b ] Which of the following statements is true regarding this entry?（）