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回复 1# ontherd
- cat 1
- user01
- user02
- user03
- cat 2
- Thu Oct 28 03:45:03 2021 user01
- Thu Oct 28 03:42:03 2021 user01
- Thu Oct 28 03:40:03 2021 user01
- Thu Oct 28 03:50:03 2021 user02
- awk 'BEGIN{a="2021/01/01 00:00:00";b["Jan"]=1;b["Feb"]=2;b["Mar"]=3;b["Apr"]=4;b["May"]=5;b["Jun"]=6;b["Jul"]=7;b["Aug"]=8;b["Sep"]=9;b["Oct"]=10;b["Nov"]=11;b["Dec"]=12}FILENAME==ARGV[1]{split($0,c,"[ :]");d=mktime(""c[7]" "b[c[2]]" "c[3]" "c[4]" "c[5]" "c[6]"");e=$6;if(f[e]<d){f[e]=d;NF=NF-1;g[e]=$0}}FILENAME==ARGV[2]{print $1,g[$1]?g[$1]:a}' 2 1
- user01 Thu Oct 28 03:45:03 2021
- user02 Thu Oct 28 03:50:03 2021
- user03 2021/01/01 00:00:00
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