Free 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?
id
hostname
whoami
pwd
date
This question's topic:
CompTIA Linux+ XK0-005 /
Scripting, Containers, and Automation
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