Redirect output from sed 's/c/d/' myFile to myFile

Question

I am using sed in a script to do a replace and I want to have the replaced file overwrite the file. Normally I think that you would use this:

% sed -i \'s/c         


        

Answer 1

A lot of answers, but none of them is correct. Here is the correct and simplest one:

$ echo "111 222 333" > file.txt
$ sed -i -s s/222/444/ file.txt 
$ cat file.txt
111 444 333
$