Minimal skills

[Ralf Mardorf]

On Thu, 4 Jun 2020 08:23:04 +0200, Polytropon wrote:
>On Wed, 3 Jun 2020 23:56:37 -0600, Brandon helsley wrote:
>> diff

An example of basic shell commands, done on GNU Linux bash, but it's
not really different to FreeBSD and/or another shell ;).

[rocketmouse at archlinux tmp]$ echo "1234" > file_a.txt; echo "1234" >> file_a.txt
[rocketmouse at archlinux tmp]$ echo "1234" > file_b.txt; echo "5678" >> file_b.txt
[rocketmouse at archlinux tmp]$ cat file_a.txt
1234
1234
[rocketmouse at archlinux tmp]$ cat file_b.txt
1234
5678
[rocketmouse at archlinux tmp]$ diff file_a.txt file_b.txt
2c2
< 1234
---
> 5678

>Why do you want to make a PC (I assume it is intended to be
>used as a workstation) a mail _server_?

If this is the domain the OP likes, it's probably a good project to
learn, right after having basic skills in writing shell scripts.