change formatting

input examples are now given as

```bash
input $ARG1
```

While outputs use md's '> ' sign as a quote.

data/backups/unison.md

@@ -5,28 +5,36 @@ tags: [ "Documentation", "Backups" ]
 
 Install unison on both machines, and make sure both have the same version of unison, with the same version of the ocaml compiler (the smallest difference will cause problems).
 
-> unison -version
+```bash
+unison -version
+```
 
 Create the `~/.unison` directory on both machines.
 
 Make a job called `backup`:
 
-> vim ~/.unison/*backup*.prf
-
-You can name the file anything, but it must end in .prf.
-
-Here is an example job, which synchronizes the `~/music` directory with a remote machine.
-
+```bash
+JOB=backup
 ```
+
+Here is an example job, which synchronizes the `~/music` directory with a remote machine which has the same username.
+
+
+```bash
+echo "
 auto = true
-root=/home/ghost
-root=ssh://ghost@192.168.0.10//home/ghost/
+root=$HOME
+root=ssh://$USER@$IP_ADDRESS/$HOME
 
 path=music
 
 ignore=Name *.flac
+" > ~/.unison/"$JOB".prf
 
 ```
+
+Remember to specify `$IP_ADDRESS`
+
 The last command means it will ignore any file with a name ending in `.flac`.
 
 ## Automatic Runs
@@ -34,11 +42,12 @@ The last command means it will ignore any file with a name ending in `.flac`.
 The first command means this will run but also confirm which files will be deleted, and which will be transferred, us `batch = true` instead.
 Or you can deleted that line in the `.prf` file and run it with a flag:
 
-> unison -batch *backup*.prf
+```bash
+unison -batch *backup*.prf
+```
 
 Set unison to run with crontab or a systemd unit file to have directories synchronize automatically.
 
-
 ## Problem Solving
 
 You will see data files summarizing what has happened in the `~/.unison` directory.