的CSV文件列計算

Question

在CSV文件我有欄下面我試着用

$ awk -v FS="\",\"" -v OFS="\",\"" '{$2=sprintf("%.2f",$2*2)}1' file.csv 

改變第二列的值，但某些列包含字符串，它必須保持不變。我知道

"^[0-9][0-9]*$" 

將檢查它是否數字，但如何把它在我的命令結合？

FILE.CSV

"sku","NO price","supplierName" 
"sku","3.14","supplierName" 
"sku","3.56","supplierName" 
"sku","4.20","supplierName" 

Answer 1

您可以使用：

awk -v FS='","' -v OFS='","' '$2+0 == $2{$2=sprintf("%.2f",$2*2)}1' file.csv 
"sku","NO price","supplierName" 
"sku","6.28","supplierName" 
"sku","7.12","supplierName" 
"sku","8.40","supplierName" 

$2+0 == $2檢查可以確保在$2值是數字。