WHY

回复 24# ksla

gawk -F"." "$0~/^([0-9]+\.){3}[0-9]+$/&&!a[$1\".\"$2\".\"$3]++{print $1\".\"$2\".\"$3\".0-20\"}" IP.txt>IP_new.txt
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WHY

回复 28# ksla

 gawk -F"." "{if(/^([0-9]+\.){3}[0-9]+$/){b=$1\".\"$2\".\"$3;if(!a[b]++){print b\".0-20\"}}else{print}}" IP.txt>IP_new.txt
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