gawk 'ARGIND==1{a[$1]=$1} ARGIND==2{if(a[$1]!="") print $0}' 2.txt 1.txt > result.txt
gawk 'ARGIND==1{a[$1]=$1} ARGIND==2{if(a[$1]!="") print $0}' 2.txt 1.txt > result.txt
本文标题:从1.txt中提取出含有2.txt中内容的行
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