$ printf "foonbarn" > testfile
$ cat testfile
foo
bar
$ vim -E testfile <<-EOS
> 1
> s/foo/baz/
> x
> EOS
$ echo $?
1
$ cat testfile
baz
bar
$ vim -E testfile +'1' +'s/baz/foo/' +'x'
$ echo $?
0
$

$ vim -E testfile <<-EOS
> 1
> p
> q
> EOS
foo
$ echo $?
1
$