XK0-006 Automation, Orchestration, and Scripting Practice Question
A Bash script contains the following code: if [[ $# -eq 0 ]]; then echo 'No arguments'; fi. What does this code check?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Whether the script was called with no arguments
The $# variable holds the number of positional parameters passed to the script. The condition checks if it equals 0, meaning no arguments were provided.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Whether the first argument is empty
Why it's wrong here
$# counts arguments, not checks an argument's value.
- ✓
Whether the script was called with no arguments
Why this is correct
Correct. $# -eq 0 means zero arguments.
- ✗
Whether the script has any syntax errors
Why it's wrong here
No, this is a runtime check for arguments.
- ✗
Whether the script is running as root
Why it's wrong here
No, $EUID or id -u checks root status.
Go deeper
Related to this question
Learn chapter
File Transfer and Remote Access
Key term
Bash script
A Bash script is a text file containing a sequence of commands for the Unix shell Bash, allowing users to automate repetitive tasks and streamline system administration on Linux and macOS.
Key term
Bash
Bash is a command-line interpreter that lets users interact with an operating system by typing text commands instead of clicking icons.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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