I'm looking for documentation or a use case where in Linux there is a directory with shell scripts where each filename is led with a number, and the files are run in that particular order. What is this convention called, and where is it used?

For example:

```
0001-motd.sh
0002-proxy.sh
0300-ssh.sh

```

I know I have seen this before, just not sure where or what it is called.