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What does the ? symbol within regular expressions represent?

A.

Match the preceding qualifier one or more times.

B.

Match the preceding qualifier zero or more times.

C.

Matchthe preceding qualifier zero or one times.

D.

Match a literal ? character.

In the vi editor, which of the following commands will copy the current line into the vi buffer?

A.

c

B.

cc

C.

1c

D.

yy

E.

1y

Which command will display messages from the kernel that were output during the normal boot sequence?

Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?

A.

export LANGUAGE="pt"

B.

export MESSAGE="pt"

C.

export UI_MESSAGES="pt"

D.

export LC_MESSAGES="pt"

E.

export ALL_MESSAGES="pt"

What of the following can be done by the command ifconfig? (Choose TWO correct answers.)

A.

Set a network interface active or inactive.

B.

Specify the kernel module to be used with a network interface.

C.

Allow regular users to change the network configuration of a network interface.

D.

Change the netmask used on a network interface.

E.

Specify which network services are available on a network interface.

Which variable defines the directories in which a Bash shell searches for executable commands?

A.

BASHEXEC

B.

BASHRC

C.

PATH

D.

EXECPATH

E.

PATHRC

Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)

A.

~/.bashconf

B.

~/.bashrc

C.

~/.bashdefaults

D.

~/.bash_etc

E.

~/.bash_profile

Which command is used to set the hostname of the local system? (Specify ONLY the command without any path or parameters.)

Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?

A.

cmd || foo.txt

B.

cmd | foo.txt

C.

cmd && foo.txt

D.

cmd >> foo.txt

E.

cmd > foo.txt

Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)

A.

The list of users that belong to the group.

B.

The home directory of the group.

C.

The name of the group.

D.

The description of the group.

E.

The password of the group.