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Code Golf

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  • \$\begingroup\$ 1. I'd include -r in the byte count. 2. f()(while ... done) is a bit shorter. \$\endgroup\$ Commented Sep 24, 2015 at 6:36
  • \$\begingroup\$ @Dennis: Without [[ $r ]]&&, if N=4, an input line of length 4 will produce a blank output line where there wasn't one before. Because read returns a string of 4 chars, then sees a newline on the next call and returns right away. Also, thanks for the () tip. I didn't know you could define fns that way. \$\endgroup\$ Commented Sep 24, 2015 at 6:37
  • \$\begingroup\$ I recommend reading Tips for golfing in Bash. It's a great resource. \$\endgroup\$ Commented Sep 24, 2015 at 6:39
  • \$\begingroup\$ Actually, since while is already compound, you don't even need the parentheses: f()while ... done \$\endgroup\$ Commented Sep 24, 2015 at 6:42
  • \$\begingroup\$ @Dennis: wow, haxx. Thanks for the link. A couple of those things were new to me, and I fixed a couple things in another answer :) I don't normally golf, but >15 years of being a command-line junkie has taught me a thing or two :) \$\endgroup\$ Commented Sep 24, 2015 at 7:18