使用AWK替换一些特殊代码

Question

lets say I have a file called somedata.txt, I am trying to replace:

\\"

with

"

ie removing the \\ I am trying to do this using AWK. Can you please help?

Answer 1

You will need to escape both characters \\ and " like shown below

awk '{gsub("\\\\\"", "\"")}1' somedata.txt

Or if you can use sed it becomes simpler

sed 's/\\"/"/g' somedata.txt

sed also allows inplace editing (flag -i ) to update original files

sed -i 's/\\"/"/g' somedata.txt

Answer 2

You can also open file in vim editor and try this: Press esc and then

:%s_oldString_newString_g

For your case, it's

:%s_\\\"_\"_g

Since " and \\ are special characters, you need to add a \\ before the chars to make the command execute.