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Ok, right. But then it should still say either "booleans are just numbers" or "numbers can be interpreted as booleans, i.e. are truthy or falsy".
by MauranKilom 4y ago
Ok, right. But then it should still say either "booleans are just numbers" or "numbers can be interpreted as booleans, i.e. are truthy or falsy".
- ancientsofmumu 4y agoIt's not that cut & dry, as bash is doing evaluations; 0 and 1 can both be "true" if simply used without an evaluation, but add logic and it starts to matter (grep returns 0 if hit, 1 if not). [[ 0 ]] && echo "hit 0" [[ 1 ]] && echo "hit 1" grep -q 127 /etc/hosts && echo "hit grep" grep -q 128 /etc/hosts || echo "miss grep"