EX200 Create simple shell scripts Practice Question
This EX200 practice question tests your understanding of create simple shell scripts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are true about creating simple shell scripts in Red Hat Enterprise Linux?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The shebang line (e.g., #!/bin/bash) is used to specify the interpreter.
Option A is correct because the shebang line (e.g., #!/bin/bash) tells the kernel which interpreter to use when executing the script. Without it, the shell may fall back to the default interpreter (often /bin/sh) or fail to run the script correctly. This is a fundamental requirement for any interpreted script in Linux.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The shebang line (e.g., #!/bin/bash) is used to specify the interpreter.
Why this is correct
The shebang line tells the system which interpreter to use.
Related concept
Read the scenario before looking for a memorised answer.
✗
Scripts must be stored in /usr/local/bin to be found by the shell.
Why it's wrong here
Scripts can be placed anywhere; the PATH variable determines where the shell looks.
✓
The script file must have execute permission (chmod +x) to be run directly.
Why this is correct
Execute permission is necessary to run the script as a command.
Related concept
Read the scenario before looking for a memorised answer.
✗
A script must be compiled before it can be run.
Why it's wrong here
Shell scripts are interpreted, not compiled.
✗
A script must have a .sh file extension to be executable.
Why it's wrong here
File extension is not required; execute permission is what matters.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Red Hat often tests the misconception that file extensions or specific directories are mandatory for script execution, when in fact the shebang line and execute permission are the only requirements.
Detailed technical explanation
How to think about this question
When a script is executed, the kernel reads the first two bytes (0x23 0x21, i.e., '#!') to identify it as a script, then parses the rest of the first line to locate the interpreter. The execute permission (chmod +x) is a file system attribute that controls whether the file can be run directly; without it, the script can still be run by explicitly invoking an interpreter (e.g., bash script.sh). In real-world scenarios, placing scripts in ~/bin or /usr/local/bin ensures they are in the user's PATH without requiring root privileges.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the EX200 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Create simple shell scripts — This question tests Create simple shell scripts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The shebang line (e.g., #!/bin/bash) is used to specify the interpreter. — Option A is correct because the shebang line (e.g., #!/bin/bash) tells the kernel which interpreter to use when executing the script. Without it, the shell may fall back to the default interpreter (often /bin/sh) or fail to run the script correctly. This is a fundamental requirement for any interpreted script in Linux.
What should I do if I get this EX200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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