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  • 1
    Aha! it's obvious (now that I've seen your awk script :) ... There is no need to keep checking for min and max when the array is sorted :) and that means that the NR==1 can go (a useless-use-of-if) along with the min/max checks, so all initializing can be located in the BEGIN section (good!)... Allowing for comments is a nice touch too.. Thanks, +1 ... Commented May 26, 2011 at 2:28
  • Just a thought.. maybe allowing only numerics is better than disallowing comments (but that depends you your requirements).. Commented May 26, 2011 at 6:21
  • 2
    Technically, awk will assume "new" variables are zero, so in this case the BEGIN{} section is unnecessary. I've fixed the wrapping (no need to escape the line breaks either). I also used OFS="\t" to clean up the print line and implemented @Peter.O's second comment. (Yes, my regex allows ., but as awk interprets that as 0, that's acceptable.) Commented Jan 15, 2015 at 21:22
  • 1
    @AdamKatz - these are great changes, but as it stands, I didn't write the program. My awk script is now substantially different. I almost feel like you should take credit for the above program, in order to give credit where credit is due. Commented Jan 15, 2015 at 22:31
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    I wrote a perl script called avg that does this and more, by the way. Commented Aug 1, 2018 at 17:20