用於刪除其中包含一些逗號的'減號'字符的模式

Question

我正在查找SED（首選）或其他可以處理正則表達式的實用程序的模式，以從file.txt中刪除不必要的-和,字符。

我想刪除一切看起來是這樣的：

-----------,-------------------------------------,---------,-,---------,--------- 

而不刪除不屬於近負任何逗號，沒有如果他們後面的數字或字母消除任何短處。

我在尋找的模式是-,和,-和--（我是這麼認爲的）

科馬斯和未匹配模式優缺點，應保持不變;）

輸入的樣子此：

xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxx,xxxxxxxxx,xxxx 
------------------,------------------,---------------------------------------------------------------------------- 
-----------------------------------------------------,-,---,---------------------------,-----------------,--------- 
1999,2014,591025,xöxxxxxxx,~,~,xxxxöxxx,xxx,1103469,27-xxx-76,x,01-xxx-99,31-xxx-01,,273,321,321,2 
1999,2014,591025,xöxxxxxxx,~,~,xxxx,xxxxx,1103759,13-xxx-61,x,01-xxx-99,30-xxx-01,,~,321,321,1 
1999,2014,591025,xöxxxxxxx,~,~,xxxxxxx,xxxx,1109909,01-xxx-70,x,01-xxx-99,31-xxx-00,,~,321,321,1 

所需的輸出：

xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxx,xxxxxxxxx,xxxx 
1999,2014,591025,xöxxxxxxx,~,~,xxxxöxxx,xxx,1103469,27-xxx-76,x,01-xxx-99,31-xxx-01,,273,321,321,2 
1999,2014,591025,xöxxxxxxx,~,~,xxxx,xxxxx,1103759,13-xxx-61,x,01-xxx-99,30-xxx-01,,~,321,321,1 
1999,2014,591025,xöxxxxxxx,~,~,xxxxxxx,xxxx,1109909,01-xxx-70,x,01-xxx-99,31-xxx-00,,~,321,321,1 

Answer 1

你可以使用這個sed的：

sed -i.bak -r '/(-+,)+-+$/d' input 
xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxx,xxxxxxxxx,xxxx 
1999,2014,591025,xöxxxxxxx,~,~,xxxxöxxx,xxx,1103469,27-xxx-76,x,01-xxx-99,31-xxx-01,,273,321,321,2 
1999,2014,591025,xöxxxxxxx,~,~,xxxx,xxxxx,1103759,13-xxx-61,x,01-xxx-99,30-xxx-01,,~,321,321,1 
1999,2014,591025,xöxxxxxxx,~,~,xxxxxxx,xxxx,1109909,01-xxx-70,x,01-xxx-99,31-xxx-00,,~,321,321,1 

您可以使用此AWK：

awk -F '(-+,)+-+$' '$NF' input 
xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxx,xxxxxxxxx,xxxx 
1999,2014,591025,xöxxxxxxx,~,~,xxxxöxxx,xxx,1103469,27-xxx-76,x,01-xxx-99,31-xxx-01,,273,321,321,2 
1999,2014,591025,xöxxxxxxx,~,~,xxxx,xxxxx,1103759,13-xxx-61,x,01-xxx-99,30-xxx-01,,~,321,321,1 
1999,2014,591025,xöxxxxxxx,~,~,xxxxxxx,xxxx,1109909,01-xxx-70,x,01-xxx-99,31-xxx-00,,~,321,321,1 

甚至這個awk的工作原理：

awk -F '(-+,)+-+$' 'NF==1' input 

Answer 2

如何

$ sed 's/--\+\|-,\+\|,-//g; /^$/d' input 
xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxxxxxxxxxxxxx,xxxxxxxxxxx,xxxxxxxxx,xxxx 
1999,2014,591025,xöxxxxxxx,~,~,xxxxöxxx,xxx,1103469,27-xxx-76,x,01-xxx-99,31-xxx-01,,273,321,321,2 
1999,2014,591025,xöxxxxxxx,~,~,xxxx,xxxxx,1103759,13-xxx-61,x,01-xxx-99,30-xxx-01,,~,321,321,1 
1999,2014,591025,xöxxxxxxx,~,~,xxxxxxx,xxxx,1109909,01-xxx-70,x,01-xxx-99,31-xxx-00,,~,321,321,1 

或者一個很好的外觀NG使用-r選項

$ sed -r 's/--+|-,+|,-//g; /^$/d' input 

Answer 3

另一個SED選項

sed '/^[-,]\+$/d' file 

另一個AWK

awk '!/^[-,]+$/' file 

這些會爲你的輸出