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Questions about shell scripts, executable files that are interpreted by a shell (bash, zsh, etc.). Check scripts with https://shellcheck.net before posting.

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3 answers
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awk based solution for summing the rows of multiple files

I have several files which look like file1.dat: 1 1 1 3 4 5 9 10 11 file2.dat: 3 0 8 9 0 3 9 2 4 typically with many more rows (with each row containing one less column than the previous row). I dev …
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