I know the full command "/bin/child\_process" or its pid (3996 in this case) and I'm running `ps auxf` and then visually identifying its ancestor process `/bin/parent_process foobar`.

```
root      3227  0.0  0.0    992   296 ?        S<s  10:35   0:00 /bin/parent_process foobar
20058     3987  0.0  0.0  17716  1452 ?        S<s  10:35   0:00  \_ /bin/bash
20058     3989  0.0  0.0  19240  1728 ?        S<   10:35   0:00      \_ /bin/bash other_args
20058     3996  0.2  1.5 1621804 546104 ?      S<l  10:35   0:54          \_ /bin/child_process

```

The ancestor process may not always be 3 levels away. Is there a way I can automate this with a command such that I could supply just the pid `3996` or the command `/bin/child_process` and get out `/bin/parent_process foobar`? In particular, it will always say `/bin/parent_process`, but it will have a different argument than `foobar` every time. The output of `ps auxf` is very difficult to traverse as a hierarchy to determine a particular ancestor process.