Aggregate failure codes in bash -


i've got script has multiple stages, , @ each stage it's possible fail, script can carry on running.

concretely, generate json, , check if diff correct. diff wrong, doesn't stop next stage of json being produced.

how can aggregate failure codes of diff, return 1 if diff returned > 1, , 0 otherwise, without ending failure occured?

basically, it's folding || on result codes, can't seem find nice way || string return code.

skeleton:

main_result=0 s in stage1 stage2 stage3;     diff <(generate-stuff) expected-$stage     result=$?     # main_result=$main_result || $result done  exit $main_result

logical or can done as:

main_result=$((main_result || result))

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