Question

我的数据：

-1||"A|AA"||aaa@ymail
-10||"B ||B|ttB||b|| bb@ymail
-7||C||c

我想用逗号||交换双管分隔符,，如下所示：

awk -F'||' -v OFS="," '{$1=$1} 1' 2.txt

但输出保持不变。但是，相反的情况（双管道的逗号分隔符）有效：

awk -F"," -v OFS="||" '{$1=$1} 1' 1.txt

我做错了什么？

Answer 1

您需要转义管道符号：

awk -F '[|][|]' -v OFS="," '{$1=$1}1'

Answer 2

您需要转义像|这样的元字符，或者在字符类中使用它们，以便将它们视为文字。它们被认为是没有转义的逻辑OR符号。试试这个：

$ awk -F'[|][|]' -v OFS="," '{$1=$1} 1' data
-1,"A|AA",aaa@ymail
-10,"B ,B|ttB,b, bb@ymail
-7,C,c

Answer 3

执行此操作的不同方法：

awk -F '[|][|]' -v OFS="," '{$1=$1}1' # as suggested by accepted anwer
awk -F '[|]{2}' # my favorite as it is easier to extend this solution to more than two pipes
awk -F '\\|\\|' -v OFS="," '{$1=$1}1' # another way to escape
awk -F "\\\|\\\|" -v OFS="," '{$1=$1}1' # see https://superuser.com/a/1249834

AWK：字段分隔符为双管或更多

3 个答案: