在每列的末尾添加一个模式

Question

假设我有一个类似于这种格式的文件：

"pop","hand stuff","test "
"non","no way","good "

除了只有3列它有数百个。我想在每列的末尾添加@，因此输出为

"pop@","hand stuff@","test @"
"non@","no way@","good @"

如果我只有少量列，那么我可以做

awk -F"," vOFS=, '{print $1"@",$2"@",$3"@"}'

但如果我有很多列并且我不想在awk脚本中指定每一列，我该如何做？

Answer 1

你可以使用像下面这样的awk＆＃39s gsub函数。

awk '{gsub(/",/, "@\",");sub(/"$/, "@\"")}1' file

示例：

$ echo '"pop","hand stuff","test "' | awk '{gsub(/",/, "@\",");sub(/"$/, "@\"")}1'
"pop@","hand stuff@","test @"

Answer 2

只要您的专栏不包含疯狂数据（特别是字符串中嵌入\",），sed就会更容易：

OSX / BSD：

sed -E 's/"(,|$)/@"\1/g' 

GNU：

sed -r 's/"(,|$)/@"\1/g' 

Answer 3

$ sed -r 's/("[^"]+)"/\1@"/g' file
"pop@","hand stuff@","test @"
"non@","no way@","good @"