awk, sed的一些简单用法

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accumulating data

awk 'BEGIN{sum=0}{sum+=$1}END{print sum}'

formating output

awk 'BEGIN { FS = "," } ; { print $1, ",", $2, ",", $3, ",", $4=$4*512 };' abq4.log 



sed 's/]/,/g' abq.log


sed 's/block [0-9]* on/,/g' abq5.log > abqReadWrite.log

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