simple shell script to compare two dirs recursively

[Ralf Mardorf]

On Mon, 2 Nov 2020 19:11:41 +0100, Per olof Ljungmark wrote:
>I need a *simple* shell (does not matter which)

Just in case:

[rocketmouse at archlinux ~]$ pacman -Qo /usr/bin/diff
/usr/bin/diff is owned by diffutils 3.7-3
[rocketmouse at archlinux ~]$ pacman -Qi diffutils | grep -e URL -e Depends
URL             : https://www.gnu.org/software/diffutils
Depends On      : glibc  bash
[rocketmouse at archlinux ~]$ /usr/bin/diff --help | grep no-de
      --no-dereference            don't follow symbolic links

It might be completely irrelevant for your case or for FreeBSD's diff
at all.

However, following or not following symbolic links could be tricky.