You want to check if a script received exactly two arguments and print a message with the script name and arguments. Which snippet correctly uses special variables?

hard🚀 Application Q9 of 15

Bash Scripting - Variables

Aif [ "$?" -eq 2 ]; then echo "Script $0 got args: $1 and $2"; fi

Bif [ "$#" -eq 2 ]; then echo "Script $0 got args: $1 and $2"; fi

Cif [ "$@" -eq 2 ]; then echo "Script $0 got args: $1 and $2"; fi

Dif [ "$0" -eq 2 ]; then echo "Script $0 got args: $1 and $2"; fi

Step-by-Step Solution

Solution:

Step 1: Identify variable holding argument count
$# holds the number of arguments passed to the script.
Step 2: Use correct test syntax
The test [ "$#" -eq 2 ] checks if exactly two arguments were passed.
Final Answer:
Use $# to check argument count and $1, $2 for arguments -> Option B
Quick Check:
$# = argument count [OK]

Quick Trick: Use $# to count args; $1, $2 to access them [OK]

Common Mistakes:

MISTAKES

Using $@ or $? instead of $# for count
Comparing string variables with -eq incorrectly
Using $0 (script name) as argument count

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More Bash Scripting Quizzes

You want to check if a script received exactly two arguments and print a message with the script name and arguments. Which snippet correctly uses special variables?

Step 1: Identify variable holding argument count

Step 2: Use correct test syntax

Final Answer:

Quick Check:

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