Certified Linux Administrator 11: 050-720

You have a text file that contains empty lines. Using grep and regular expressions, which command displays the file without the empty lines?

A. grep ^$ file

B. grep [\ ] file

C. grep -v ^$ file

D. grep -v #$ file

Routes to the directly connected network are automatically set up when a device is started. All other routes are saved in which configuration file?

A. /etc/route

B. /etc/routes

C. /etc/routes.conf

D. /etc/network/routes

E. /etc/sysconfig/routes

F. /etc/sysconfig/network/routes

The useradd command is used to create new users. Which file contains information on the primary group, shell, and other parameters to be used by useradd when not specified on the command line?

A. /etc/profile

B. /etc/passwd

C. /etc/shadow

D. /etc/default/useradd