如何删除 linux 中的特定“][”

Question

I have text files with lots of brackets as below:

Name:[Sara,Jane,John]
FamilyName: [Alexandr,Walter,Waze]
Number: [21][44]

I want to just remove ][ in Number and make the file look like as below:

Name:[Sara,Jane,John]
FamilyName: [Alexandr,Walter,Waze]
Number: [2144]

Below Code remove all brackets and cant work properly, I really if any can help me in modifying this code?

find . -name "*.txt" |xargs sed -i.bak -e 's/[][]//g;' '{}'

Best Regards, Sara

Answer 1

$ sed '/Number/ s/]\[//' ip.txt 
Name:[Sara,Jane,John]
FamilyName: [Alexandr,Walter,Waze]
Number: [2144]

• /Number/ match lines containing Number
  • for such line, s/]\[// will remove first occurrence of ][
  • [ needs to be escaped to match it literally

[][] will match ] or [ character once. Use of g flag will then remove all square brackets. In this example, you shouldn't use character class because you want to match ] and [ in that particular order.

To give another example, to delete foo , you need to use s/foo// and not s/[foo]// .

Answer 2

Could you please try following, based on your shown examples only.

awk '/Number/{gsub(/]\[/,"")} 1' Input_file

Explanation: /Number/ is looking for string Number in current line and if found; then using gsub globally substituting ][ with NULL. 1 will print current line.