1加到100计算

awk 'BEGIN{sum=0;i=0;while(i<=100){sum+=i;i++};{print sum}}' awk 'BEGIN{sum=0;for(i=0;i<=100;i++){sum+=i};print sum}' #awk -F: '/root/{i=1;while(i<=NF){print $i,length($i);i++}}' /etc/passwd awk 'BEGI

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