Which command should the technician advise the user to execute?

A user is preparing to upgrade their Linux system and needs to check their current operating system version to ensure compatibility with new software.

Which command should the technician advise the user to execute?
A . uname -r
B . cat /etc/*-release
C . lsb_release -a
D . dmesg | grep Linux

View Answer

Answer: C

Explanation:

Correct Answer. C. lsb_release -a The command lsb_release -a provides comprehensive details about the Linux Standard Base (LSB) version along with specific distribution information, making it ideal for users to verify their entire operating system version.

Option A is incorrect because uname -r only displays the kernel version, which does not provide complete OS version information.

Option B is incorrect because cat /etc/*-release might show some version details, but it’s not as standardized or detailed compared to the lsb_release -a command.

Option D is incorrect because dmesg | grep Linux retrieves boot messages that might include kernel information but is not reliable for obtaining comprehensive OS version details.