TESTOUT EXAMS COMPILATION BUNDLE
PRACTICE TEST BANK 2026 TESTED
QUESTIONS WITH ANSWERS GRADED A+
⩥ From the Console (The keyboard and monitor attached to a computer
running Linux). Answer: Press the following key combinations:
Ctrl+Alt+F1 (in some Linux distributions, Alt+F1) will start or switch to
the first Linux shell session.
Ctrl+Alt+F2 through Ctrl+Alt+F6 (in some Linux distributions, Alt+F2
through Alt+F6) will switch to the second through sixth shell sessions.
While Linux distributions will vary, in most cases when a GUI is
installed, it will use the first console session. Use Ctrl+Alt+F1 to switch
to a graphical login screen. If you are already logged in, Ctrl+Alt+F7
will switch to the desktop GUI.
⩥ From a desktop GUI. Answer: Open a terminal session from the
applications menu.
⩥ sh. Answer: The Bourne shell is the oldest Linux shell, but is not
widely used. This shell was developed for UNIX in the 1970s.
⩥ bash. Answer: The Bourne-again shell (Bash) is the default shell used
by most Linux distributions. It uses commands similar to a UNIX shell.
The Bash includes:
,Command and file name completion when pressing the Tab key
Command history
⩥ zsh. Answer: The Z Shell (zsh) is an improved version of Bash and is
available on many Linux distributions.
⩥ shh. Answer: The Bourne shell (sh) is an earlier version of bash, and
is similar in many ways. The sh shell was originally created by Steve
Bourne.
⩥ ksh. Answer: The Korn shell (ksh) provides scripting features not
found in Bash. Ksh was developed by David Korn.
⩥ csh. Answer: The C-shell (csh) uses syntax similar to the syntax used
in the C programming language.
⩥ tcsh. Answer: The tcsh shell is an improved version of csh. It offers
command line editing and completion features that are not available in
csh.
⩥ /etc/shells. Answer: If a shell type is installed, it will be listed in the
/etc/shells file. You can switch to any shell by typing the shell's name.
For example, type ksh within any shell to switch to the Korn shell.
, ⩥ echo $SHELL. Answer: The echo $SHELL command returns the
default or preferred shell. The environment $SHELL holds the user's
preferred shell which is typically set in /etc/passwd. For example, if bash
is the user's preferred shell, $SHELL will hold the value, /bin/bash. The
preferred shell does not change when you switch shell types.
⩥ echo $0. Answer: The echo $0 command can be used to return the
current shell type. The special variable $0 normally holds the command
used to start a script. A shell session is initiated by a script.
Consequently, $0 will hold the name of the script which is consistent
with the shell type. For example, $0 in a console session running bash
might hold the value -bash, $0 in a terminal application opened from a
desktop menu might hold the value bash. When you type ksh, the ksh
script is run, a Korn shell session is opened and $0 will hold the value
ksh.
⩥ all shells share some common characteristics:. Answer: The shell
provides a command line interface that allows the user to interact with
the Linux kernel.
A Linux system can run multiple shell sessions at the same time.
One shell session can run within another shell session. This may be done
interactively, such as when a user starts a second shell from the first
shell's command line, or automatically, by scripts or programs.
Shells use configuration files to establish their operating environments.
⩥ bash shell default command line prompt. Answer: The username of
the current user
PRACTICE TEST BANK 2026 TESTED
QUESTIONS WITH ANSWERS GRADED A+
⩥ From the Console (The keyboard and monitor attached to a computer
running Linux). Answer: Press the following key combinations:
Ctrl+Alt+F1 (in some Linux distributions, Alt+F1) will start or switch to
the first Linux shell session.
Ctrl+Alt+F2 through Ctrl+Alt+F6 (in some Linux distributions, Alt+F2
through Alt+F6) will switch to the second through sixth shell sessions.
While Linux distributions will vary, in most cases when a GUI is
installed, it will use the first console session. Use Ctrl+Alt+F1 to switch
to a graphical login screen. If you are already logged in, Ctrl+Alt+F7
will switch to the desktop GUI.
⩥ From a desktop GUI. Answer: Open a terminal session from the
applications menu.
⩥ sh. Answer: The Bourne shell is the oldest Linux shell, but is not
widely used. This shell was developed for UNIX in the 1970s.
⩥ bash. Answer: The Bourne-again shell (Bash) is the default shell used
by most Linux distributions. It uses commands similar to a UNIX shell.
The Bash includes:
,Command and file name completion when pressing the Tab key
Command history
⩥ zsh. Answer: The Z Shell (zsh) is an improved version of Bash and is
available on many Linux distributions.
⩥ shh. Answer: The Bourne shell (sh) is an earlier version of bash, and
is similar in many ways. The sh shell was originally created by Steve
Bourne.
⩥ ksh. Answer: The Korn shell (ksh) provides scripting features not
found in Bash. Ksh was developed by David Korn.
⩥ csh. Answer: The C-shell (csh) uses syntax similar to the syntax used
in the C programming language.
⩥ tcsh. Answer: The tcsh shell is an improved version of csh. It offers
command line editing and completion features that are not available in
csh.
⩥ /etc/shells. Answer: If a shell type is installed, it will be listed in the
/etc/shells file. You can switch to any shell by typing the shell's name.
For example, type ksh within any shell to switch to the Korn shell.
, ⩥ echo $SHELL. Answer: The echo $SHELL command returns the
default or preferred shell. The environment $SHELL holds the user's
preferred shell which is typically set in /etc/passwd. For example, if bash
is the user's preferred shell, $SHELL will hold the value, /bin/bash. The
preferred shell does not change when you switch shell types.
⩥ echo $0. Answer: The echo $0 command can be used to return the
current shell type. The special variable $0 normally holds the command
used to start a script. A shell session is initiated by a script.
Consequently, $0 will hold the name of the script which is consistent
with the shell type. For example, $0 in a console session running bash
might hold the value -bash, $0 in a terminal application opened from a
desktop menu might hold the value bash. When you type ksh, the ksh
script is run, a Korn shell session is opened and $0 will hold the value
ksh.
⩥ all shells share some common characteristics:. Answer: The shell
provides a command line interface that allows the user to interact with
the Linux kernel.
A Linux system can run multiple shell sessions at the same time.
One shell session can run within another shell session. This may be done
interactively, such as when a user starts a second shell from the first
shell's command line, or automatically, by scripts or programs.
Shells use configuration files to establish their operating environments.
⩥ bash shell default command line prompt. Answer: The username of
the current user
