I tested the single quote and double quotes in sed
me@host:~:
$ echo "front" | sed "s/front/back/"
back
me@host:~:
$ echo "front" | sed 's/front/back/'
back
They performed identically, but I remembered to read there exist differences between them months ago.
Google search not helpful with keywords "single quotes and double quotes in sed".
They are not identically, right?
