What’s the Best Way to Parse a Config for a Backup Script?

Using a delimited format can simplify things! Each drive can have a unique ID, so you might consider a setup like this:

```
UUID:source path:destination path
```

You can get the UUIDs from your drives using `blkid`. Your backup script can read from this config file, allowing you to easily loop through the drives and their paths. Here's a quick example:

```bash
while read -r uuid; do
while IFS=":" read -r _ source dest; do
# Your backup steps here
done < <(grep "^${uuid}" /path/to/backup.conf)
done < <(sudo blkid -s UUID -o value)
```

This keeps it straightforward and uses simple string parsing!

Using a format like TOML works great for this kind of configuration too! It can easily define your drives and paths in a clean manner that’s easy to read and maintain. You might find it less cumbersome compared to traditional bash-only solutions.

Keep it simple! Just remember to separate your drive identifiers from the paths with a delimiter to avoid conflicts. Something like "|" works well since it's seldom found in path names!

Honestly, if the configurations get too complex, you might want to switch to Python or another programming language that handles nested structures better than Bash. If you stick with Bash, just make sure your drive names don’t conflict with variable names and consider organizing your data effectively with delimiters. You can load paths into arrays which simplifies the way you manage multiple values.

For something more robust, consider using a service registry like Consul or Etcd. They can store variables in a structured way and make retrieval seamless. With a service like this, you can fetch configurations using a simple command instead of worrying about formatting your own files. Here's a quick sample for fetching keys:

```bash
for key in $(curl -s http://localhost:8500/v1/kv/myapp/config/?keys); do
var_name=$(basename "$key")
var_value=$(curl -s http://localhost:8500/v1/kv/"$key"?raw)
export "$var_name"="$var_value"
done
```

This will load all your relevant configuration into environment variables automatically!