> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/programming_tasks/f/find_common_directory_path.md).

# Find common directory path

```ruby
var dirs = %w(
    /home/user1/tmp/coverage/test
    /home/user1/tmp/covert/operator
    /home/user1/tmp/coven/members
);
 
var unique_pref = dirs.map{.split('/')}.abbrev.min_by{.len};
var common_dir  = [unique_pref, unique_pref.pop][0].join('/');
say common_dir;   # => /home/user1/tmp
```