How does 'head' maintain memory efficiency?

The head command maintains memory efficiency in the following ways:

Partial Reading: head reads only the beginning portion of a file, rather than loading the entire file into memory. This is particularly beneficial for large files, as it minimizes memory usage.
Stream Processing: It processes data in a streaming manner, which means it can output the requested lines as they are read, without needing to store the entire file content in memory.
Fixed Output Size: Since head is designed to output a specific number of lines (or bytes), it inherently limits the amount of data it handles at any given time, further reducing memory consumption.

These characteristics make head a suitable tool for quickly examining large files without overwhelming system memory.