I want to convert all apostrophes in this file to
Bob's book Bob’s book Bob′s book # (Might look the same but actually different)
The first apostrophe is replaced as expected:
$ cat file | tr "'" "X" BobXs book Bob’s book Bob′s book
But the the two other kinds of apostrophe, strange things happen:
$ cat file | tr "’" "X" Bob's book BobXXXs book BobXX�s book $ cat file | tr "′" "X" Bob's book BobXX�s book BobXXXs book
How to make it work?