Discuss CompTIA DS0-001 Exam Topic 2 Question 55

Which of the following is a typical instruction that is found on a Linux command-line script and represents a system shell?

A/bin/bash

B#/bin/shell

C>/bin/sh

D#!/bin/bash

Suggested Answer: D

The instruction that is found on a Linux command-line script and represents a system shell is #!/bin/bash. This instruction is called a shebang or a hashbang, and it indicates the interpreter that should be used to execute the script. In this case, the interpreter is /bin/bash, which is the path to the bash shell, a common system shell for Linux. A system shell is a program that provides an interface for users to interact with the operating system, either through commands or scripts. A system shell can also perform various tasks, such as file management, process control, variable assignment, etc. The other options are either incorrect or not typical for this purpose. For example, /bin/bash is the path to the bash shell, but it does not indicate the interpreter for the script; #/bin/shell is not a valid shebang or a path to a system shell; >/bin/sh is a redirection operator followed by a path to a system shell, but it does not indicate the interpreter for the script.Reference:CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.

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22 comments · newest first

Merissa 2 days ago

Yeah, that looks right. It's the shebang!

Valene 8 days ago

I think it's D) #!/bin/bash.

Keena 13 days ago

Agreed, D) is definitely the correct choice!

Ryan 18 days ago

I remember learning that D) is the standard for scripts.

Dominga 23 days ago

A) /bin/bash is also a valid option, but not typical.

Lizbeth 28 days ago

I feel unsure about this one.

Thurman 1 month ago

Yeah, that looks right. It's the shebang!

Floyd 1 month ago

I think it's D) #!/bin/bash.

Herschel 1 month ago

100% agree with #!/bin/bash, that's the standard!

Noel 2 months ago

Nah, I think >/bin/sh is a valid option too.

Erinn 2 months ago

Wait, is #!/bin/bash really how it starts? Seems odd!

Tashia 2 months ago

I thought it was /bin/bash, but I guess it needs the #! part.

Nikita 2 months ago

Definitely #!/bin/bash is the right one!

Iraida 2 months ago

Why does it have to start with #!? That seems odd.

Barb 2 months ago

A and D are both valid, but D is the shebang line.

Frederick 3 months ago

Wait, is it really D? I thought it was just A.

Dalene 3 months ago

I think D) #!/bin/bash is more accurate for scripts.

Marti 3 months ago

Definitely A) /bin/bash is the right one.

Desire 3 months ago

I feel like I’ve seen something like A) /bin/bash in a script before, but it doesn’t seem to be the typical instruction. I’m leaning towards D.

Polly 3 months ago

I’m a bit confused about the options. I thought the shebang was always written as #!/bin/bash, but I’m not sure if any of the other options could be valid.

Annamae 4 months ago

I remember practicing a question about shebang lines, and I think it was similar to this one. D seems right.

Rusty 5 months ago

I think the answer might be D) #!/bin/bash, but I’m not entirely sure if that’s the only correct format.

CompTIA DS0-001 Exam - Topic 2 Question 55 Discussion