单项选择题
A.ctrl+d B.ctrl+c C.ctrl+l D.ctrl+z
A.8000 B.8080 C.80 D.8800
A.grep’s/listen.*/listen8080/’/etc/httpd/conf/httpd.conf B.sed-i’s/listen.*/listen8080/’/etc/httpd/conf/httpd.conf C.sed’/listen.*/d’/etc/httpd/conf/httpd.conf D.sed-n’/listen.*/p’/etc/httpd/conf/httpd.conf