It's well known fact that extra space in env.variable can lead to deletion of / directory in bash script.

```
#!/bin/bash
...
rm -rf /$MYPATH

```

if $MYPATH contains values like **" dir"** or **"dir /"** it will lead to **"rm -rf / dir"** or **"rm -rf dir /"**. And will result into **"rm -rf /"**

Are there any best practices to prevent this situation?