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lang-bash
bashas well as a BusyBox sh (variant ofash), works as you say in both cases.'trap '[ $? = 0 ] && exit;'"echo 'DUPA'" INT QUIT TERM EXIT </br> sleep 2when I hit ctrl+c, i see 'dupa' printed twice. Why's that? Is trap handled twice then? When?$?will be 128+n where n is the signal, so 130 for sigint. Remember$?will be changed as soon as you give another command, so perhaps start withrc=$?;then use$rc.