Which crontab entry could be used to set the system time at regular intervals?
FILL BLANK
Which environment variable is used by an X11 client to determine the X Server to connect to? (Specify only the variable name without any preceding commands or values.)
FILL BLANK
What command enables a network interface according to distribution-specific configuration, such as /etc/ network/interfaces or /etc/sysconfig/network-scripts/ifcfg-eth0? (Specify only the command without any path or parameters.)
What argument to the -type option of find will match files that are symbolic links? (Specify only the argument and no other options or words.)
Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?
