WGU D281 Linux Foundations -
Udemy Section 2: Lesson 6 -
Creating questions with
complete verified solutions
2025Scripts
Shell script files must be plain text
i files; they cannot be generated using
{ a word processing application. The
first line in the shell script should be
: the shebang combination (#!/bin/sh).
This indicates the shell that should be
used to run the script. The remainder
| of the shell scriptis a list of
Describe the format of a basic shell commands or shell statements
script file: \ arranged in the order in which they
are to be run by the shell. Though not
| required, it's common to use the exit
. statement at the end of a shell script
to control the exit status generated
\ by the shell, especially if the shell
exists with any type of error
i condition.
(MU1_Ch11_ExamEssentials)
, Shell Scripts use variables to store
data or other information for use
later in the shell script. You assign
data to a variable using the equal
sign (=). The data can be any type of
text or numerical data, or if you
redirect the output of a command to
Explain how using variables helps store in a variable by placing backtick
when writing a shell script: () characters around the command.
To reference the value of a variable
inside the shell script, precede the
variable with a dollar sign. You can
reference variables in shell
commands as well as in shell
statements.
(MU1_Ch11_ExamEssentials)
Shell scripts can use parameters, or
arguments, to pass data from the
command line to shell script. Just
include the data parameters on the
command line command when
starting the shell script. Inside the
shell script you can retrieve any
command line parameters by using
Explain how to pass data to a shell positional variables. The $0 positional
script: variable is special; it references the
shell command used to launch the
shell script. Positional variable $1
references the first parameter
entered on the command line,
variable $2 the 2nd parameter, and
SO on.
(MU1_Ch11_ExamEssentials)
, Shell scripts can use conditional
statements to evaluate data and
make programming decisions based
i on the outcome of the evaluation.
The if and case statements are two
conditional statements that you can
use for that. The if statement can be
paired with the else statement to
create a true false scenario for
executing one set of statements if a
condition is true, and another set of
statements if a condition is false. The
. case statement allows you to specify
Describe the different types of | a range of possible values that a
programming features you can use in condition can evaluate to and execute
shell scripts: separate sets of statements for each
possible value. Besides conditional
. statements, shell scripts can use
loops to iterate through a set of
statements multiple times, based on
either a series of values or a
condition. Finally, shell scripts can
also support defining functions,
which are a set of statements
bundled together to be called from
i anywhere in the shell script as
needed.
(MU1_Ch11_ExamEssentials)
After using a text editor to create a i Set one or more executable bits using
shell script, what step should you i chmod.
take before trying to use the script by (MU1_Ch11_ReviewQs)
typing its name? 5 . .
(A) Set one or more executable bits
using chmod. :
Udemy Section 2: Lesson 6 -
Creating questions with
complete verified solutions
2025Scripts
Shell script files must be plain text
i files; they cannot be generated using
{ a word processing application. The
first line in the shell script should be
: the shebang combination (#!/bin/sh).
This indicates the shell that should be
used to run the script. The remainder
| of the shell scriptis a list of
Describe the format of a basic shell commands or shell statements
script file: \ arranged in the order in which they
are to be run by the shell. Though not
| required, it's common to use the exit
. statement at the end of a shell script
to control the exit status generated
\ by the shell, especially if the shell
exists with any type of error
i condition.
(MU1_Ch11_ExamEssentials)
, Shell Scripts use variables to store
data or other information for use
later in the shell script. You assign
data to a variable using the equal
sign (=). The data can be any type of
text or numerical data, or if you
redirect the output of a command to
Explain how using variables helps store in a variable by placing backtick
when writing a shell script: () characters around the command.
To reference the value of a variable
inside the shell script, precede the
variable with a dollar sign. You can
reference variables in shell
commands as well as in shell
statements.
(MU1_Ch11_ExamEssentials)
Shell scripts can use parameters, or
arguments, to pass data from the
command line to shell script. Just
include the data parameters on the
command line command when
starting the shell script. Inside the
shell script you can retrieve any
command line parameters by using
Explain how to pass data to a shell positional variables. The $0 positional
script: variable is special; it references the
shell command used to launch the
shell script. Positional variable $1
references the first parameter
entered on the command line,
variable $2 the 2nd parameter, and
SO on.
(MU1_Ch11_ExamEssentials)
, Shell scripts can use conditional
statements to evaluate data and
make programming decisions based
i on the outcome of the evaluation.
The if and case statements are two
conditional statements that you can
use for that. The if statement can be
paired with the else statement to
create a true false scenario for
executing one set of statements if a
condition is true, and another set of
statements if a condition is false. The
. case statement allows you to specify
Describe the different types of | a range of possible values that a
programming features you can use in condition can evaluate to and execute
shell scripts: separate sets of statements for each
possible value. Besides conditional
. statements, shell scripts can use
loops to iterate through a set of
statements multiple times, based on
either a series of values or a
condition. Finally, shell scripts can
also support defining functions,
which are a set of statements
bundled together to be called from
i anywhere in the shell script as
needed.
(MU1_Ch11_ExamEssentials)
After using a text editor to create a i Set one or more executable bits using
shell script, what step should you i chmod.
take before trying to use the script by (MU1_Ch11_ReviewQs)
typing its name? 5 . .
(A) Set one or more executable bits
using chmod. :
