Crucial Exams

CompTIA Linux+ XK0-005 Practice Question

A system administrator has been tasked with writing a shell script that reads a list of usernames from a text file named 'users.txt' and then checks whether each user exists on the system. The admin decides to use a loop along with a built-in command to verify this. Which command should be used within the loop to check the presence of a user account in the system environment?

  • pwd

  • whoami

  • hostname

  • date

  • id

CompTIA Linux+ XK0-005
Scripting, Containers, and Automation
Your Score:
Settings & Objectives
Random Mixed
Questions are selected randomly from all chosen topics, with a preference for those you haven’t seen before. You may see several questions from the same objective or domain in a row.
Rotate by Objective
Questions cycle through each objective or domain in turn, helping you avoid long streaks of questions from the same area. You may see some repeat questions, but the distribution will be more balanced across topics.

Check or uncheck an objective to set which questions you will receive.

Wipe Score
SAVE $45
CompTIA Linux+ Voucher (XK0-005)
$369.00 $324.00
Bash, the Crucial Exams Chat Bot
AI Bot