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Question 5 - DS0-001 discussion

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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
Answers
A.
/bin/bash
B.
#/bin/shell
Answers
B.
#/bin/shell
C.
>/bin/sh
Answers
C.
>/bin/sh
D.
#!/bin/bash
Answers
D.
#!/bin/bash
Suggested answer: D

Explanation:

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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asked 02/10/2024
Angelo Gulisano
36 questions
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