Which file on Linux contains the memory information of the system?

Which file on Linux contains the memory information of the system?

• A. /proc/meminfo2
• B. /proc/meminfo3
• C. /proc/meminfo
• D. /proc/memoryinfo

Answer: (C)

Linux exposes runtime system information through the /proc virtual filesystem, and memory data is read from a single file there. The file that contains memory information is /proc/meminfo. When you view it, you’ll see fields like MemTotal, MemFree, MemAvailable, Buffers, Cached, SwapTotal, and SwapFree, usually in kilobytes. This file is what tools like free or top read to determine how memory is being used. The other paths mentioned aren’t standard for memory data on Linux; /proc/meminfo2 and /proc/meminfo3 don’t exist in a typical setup, and /proc/memoryinfo isn’t the conventional location. So, /proc/meminfo is the correct file.

Linux exposes runtime system information through the /proc virtual filesystem, and memory data is read from a single file there. The file that contains memory information is /proc/meminfo. When you view it, you’ll see fields like MemTotal, MemFree, MemAvailable, Buffers, Cached, SwapTotal, and SwapFree, usually in kilobytes. This file is what tools like free or top read to determine how memory is being used. The other paths mentioned aren’t standard for memory data on Linux; /proc/meminfo2 and /proc/meminfo3 don’t exist in a typical setup, and /proc/memoryinfo isn’t the conventional location. So, /proc/meminfo is the correct file.