sed insert line command OSX

Question

I\'m trying to insert text to the third line in a file using sed, and the syntax I\'ve found on other forums is:

sed -i \'\' \"3i\\ text to insert\" file
         


        

Answer 1

A one-liner for OSX employing ANSI-C quoting:

sed -i '' '3i\'$'\n''text to insert' file

Adapted from https://stackoverflow.com/a/24299845/901597