修改sed命令以捕获子字符串

Question

I have the example text:

"are "insulin sensitizers" "

I am trying to use the below command to find and replace the xml quote command with a single quote but it only works for the first one and the second that follows "sensitizers" is left unchanged.

command:

grep -rl """ ./ | xargs sed -i "s/"/'/" 

result:

"are 'insulin sensitizers" "

desired result:

"are 'insulin sensitizers' "

Answer 1

You will need to use g flag in sed for global substitution:

grep -Zirl """ . | xargs -0 sed -i "s/"/'/g"

Also note use of -Z option in grep and -0 in xargs to take care of files with special characters and whitespaces.

As per man grep :

-Z , --null

Output a zero byte (the ASCII NUL character) instead of the character that normally follows a file name.