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回复 8# sunzhiguolu
They are the same ...- $ perl -anle '$"="\t";substr($F[2],0)=3000818;print "@F"' f
- PZ1-01-1425609646.328 3 3000818 1425609704 1425609748 44 2008 xx 2015-03-06 02:42:28.973+00
- PZ1-01-1426480458.1418 3 3000818 1426480501 1426480520 19 2233 xxx 2015-03-16 04:35:20.207+00
- $ awk 'BEGIN{FS=OFS="\t"}{$3=3000818}1' f
- PZ1-01-1425609646.328 3 3000818 1425609704 1425609748 44 2008 xx 2015-03-06 02:42:28.973+00
- PZ1-01-1426480458.1418 3 3000818 1426480501 1426480520 19 2233 xxx 2015-03-16 04:35:20.207+00
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