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Questions and Answers
What is the syntax for declaring a variable in Bash?
What is the syntax for declaring a variable in Bash?
- name = 'John' (correct)
- name := 'John'
- name == 'John'
- name: 'John'
How can you access the first command-line argument in a Bash script?
How can you access the first command-line argument in a Bash script?
- $1 (correct)
- $0
- $#
- $2
Which symbol is used for command substitution in Bash?
Which symbol is used for command substitution in Bash?
- &
- *
- ` (correct)
- $
What is the correct way to declare a variable in Bash?
What is the correct way to declare a variable in Bash?
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Which command-line argument variable would you use to access the second argument passed to a Bash script?
Which command-line argument variable would you use to access the second argument passed to a Bash script?
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What is the correct syntax for a conditional statement in Bash?
What is the correct syntax for a conditional statement in Bash?
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Study Notes
Declaring Variables in Bash
- In Bash, a variable is declared using the
variable_name=valuesyntax, wherevariable_nameis the name of the variable andvalueis the value assigned to it.
Accessing Command-Line Arguments in Bash
- The first command-line argument can be accessed using the
$1variable. - The second command-line argument can be accessed using the
$2variable.
Command Substitution in Bash
- The
$( )symbol is used for command substitution in Bash, which allows you to execute a command and use its output as a value.
Conditional Statements in Bash
- The correct syntax for a conditional statement in Bash is
if condition; then actions; fi, whereconditionis the condition being tested andactionsare the actions taken if the condition is true.
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