Least we forget, UNIX type systems is an IDE with many small tools. Plus you can batch up mass changes and run in background which you cannot do with an modern

Least we forget, UNIX type systems is an IDE with many small tools. Plus you can batch up mass changes and run in background which you cannot do with an modern IDE. See Unix as IDE (2012) https://news.ycombinator.com/item?id=38789528 https://news.ycombinator.com/item?id=38789528