For fun casual reading, try comparing the source code of any BSD utility vs. GNU. BSD tail: https://searchcode.com/codesearch/view/457515/ https://searchcode.c

For fun casual reading, try comparing the source code of any BSD utility vs. GNU. BSD tail: https://searchcode.com/codesearch/view/457515/ https://searchcode.com/codesearch/view/457515/ GNU tail: https://github.com/coreutils/coreutils/blob/master/src/tail.c https://github.com/coreutils/coreutils/blob/master/src/tail.... Usually the BSD one is short and sweet and the GNU one is a bit complex. GNU utilities may be high performance but they tend to be hard to understand.