How to run a script when accessing a specific non existing path?

Gulzar

3/16/23, 8:45 AM

I have some path I have to access, which is the result of mounting.

I would like the mounting to be automatic, via a script, and I want that script to run just before an error is thrown from not being able to access the path.

For example, assume the script is

echo scripting!
mkdir -p /non_existing_path

and I want it to run when trying to access (in any way) to the path /non_existing_path.

So when I do for example

cd /non_existing_path

touch /non_existing_path/my_file.txt

It would always succeed, with the output scripting!. In reality, the script would be more elaborated than that.

Is this possible at all?

0 + 0

command-line

bash

scripts

mount

Liso

3/16/23, 8:58 AM

You want the script to run on drive mount ?

bac0n

3/16/23, 9:25 AM

related: [How Do I use autofs to map a USB drive by its ID?](https://unix.stackexchange.com/questions/42260/how-do-i-use-autofs-to-map-a-usb-drive-by-its-id/276873)

Gulzar

3/16/23, 9:29 AM

@Liso no, I want the script to run just before getting the error `-bash: cd: /non_existing_path: No such file or directory.` It can be any script, and is not related to mounting

Liso

3/16/23, 9:40 AM

And why is that? You can prevent that with `mkdir -p` just like in your snippets. If you **really** want to make sure directory is exist, can't you just create small snippets to see *if dir not exist, then create it and run following, otherwise run following*. If that's the case, its easy to do with bash script.

Gulzar

3/16/23, 10:21 AM

@Liso as I said, the script is more elaborated. I want to mount a different directory depending on conditions, I want to log differently depending on conditions, I want to fail differently. i want the operating system to call a specific script upon accessing a specific path. Is it possible?

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How to run a script when accessing a specific non existing path?

TH: จะรันสคริปต์เมื่อเข้าถึงเส้นทางที่ไม่มีอยู่ได้อย่างไร

RO: Cum să rulezi un script când accesezi o anumită cale neexistentă?

RU: Как запустить скрипт при доступе к определенному несуществующему пути?

VI: Làm cách nào để chạy tập lệnh khi truy cập một đường dẫn không tồn tại cụ thể?

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