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Comment Re:Piping commands (Score 1) 83

Putting the sort into "ls" makes the binary (a little) bigger. Having just one sort tool probably saves space, especially when memory is precious like it was 40+ years ago. That's the fundamental concept in *x: have small specialized tools that do one thing, but do it well.

tac doesn't sort, it just reverse the order of lines.

Comment So what? (Score 2) 83

Besides convenience, command line tools got more options because they are much more powerful these days. Just compare rcs vs. cvs vs. svn vs. git.

No need to know all options - most of the time, you use a small subset anyway and you can configure aliases for your shell.

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