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  • thanks for the heads-up. I realized I'm actually facing a problem potentially due to folder structure. I wonder if I should edit the main text and explain what is happening... Commented Sep 16 at 15:46
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    if the proposed edit will change the nature of the question to the extent it invalidates the answers you've already received, then the preferred approach would be to ask a new question Commented Sep 16 at 17:09
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    Or just for hap in 1 2; do ...; done since the brace expansion isn't doing very much. Commented Sep 16 at 18:06
  • sure ... 1 2 is more than sufficient in this case; having said that, OP's attempt ([1:2]) kinda, sorta looks like an attempt at a range hence this answer; also, should OP decide to expand the range (eg, 1..20) then something other than for hap in 1 2 3 4 5 ... 20 is going to be more efficient, though for sufficiently large ranges (eg, 100's of K's, millions) a for loop would be suggested (eg, for ((hap=1;hap<=1000000;hap++)); do ... Commented Sep 16 at 19:03
  • and if the end of the range is stored in a variable (eg, end=20) then the brace expansion ({1..$end}) fails while the for loop would again be recommended (for ((hap=1;hap<=$end;hap++)); do ...) Commented Sep 16 at 19:19