Question

I would like to use sed to replace in files placeholders written like this $$placeholder$$ with the content of a variable.

Is it even possible ?

This is what I tried:

sed -i "" -e 's/\$\$placeholder\$\$/$o/g' test.txt

Half working, replace $$placeholder$$ by $o instead of the content of the $o variable

sed -i "" -e "s/\$\$placeholder\$\$/$o/g" test.txt

Not matching any of the $$placeholder$$ in my text

Thanks by advance.

Cyril

Answer 1

You can use:

sed 's/\$\$placeholder\$\$/'"$o"'/g'