On Thursday, August 5, 2021 at 4:05:49 PM UTC+8, hongy...@gmail.com wrote:
> On Thursday, November 19, 2020 at 11:35:41 AM UTC+8, Janis Papanagnou wrote:
> > I want to inspect file status information and directory contents
> > by some watchdog tool; e.g. new files appearing in a directory or
> > a file update should be detected and indicated by an alert window.
> > This should work only on dedicated files or directories, say, by
> > calling the tool with the respective name and/or file attributes.
> > Before I'm going to write my own command line tool I'd be interested
> > if there's something like that already existing.
> There is a very helpful discussion here:
>
> https://superuser.com/questions/181517/how-to-execute-a-command-whenever-a-file-changes

Based on the suggestions given in the above discussion, I currently use the following code snippet:

inotifywait --quiet --monitor --event modify some-file-under-watch | while read change; do
do-something-here
done

HY

On 05.08.2021 11:56, hongy...@gmail.com wrote:
> On Thursday, August 5, 2021 at 4:05:49 PM UTC+8, hongy...@gmail.com wrote:
>> On Thursday, November 19, 2020 at 11:35:41 AM UTC+8, Janis Papanagnou wrote:
>>> I want to inspect file status information and directory contents
>>> by some watchdog tool; e.g. new files appearing in a directory or
>>> a file update should be detected and indicated by an alert window.
>>> This should work only on dedicated files or directories, say, by
>>> calling the tool with the respective name and/or file attributes.
>>> Before I'm going to write my own command line tool I'd be interested
>>> if there's something like that already existing.
>> There is a very helpful discussion here:
>>
>> https://superuser.com/questions/181517/how-to-execute-a-command-whenever-a-file-changes
>
> Based on the suggestions given in the above discussion, I currently use the following code snippet:

In my case (the task behind the original post) it is something like

inotifywait -q -m -e create -e delete "${dir}" |
while read WHERE EVENT FILE
...check for file pattern and trigger a 'zenity' dialog...

i.e. triggering 'create' and 'delete' events on files matching a
specific pattern, and notifying about those events using 'zenity'.

('zenity' isn't optimal here, but each tool has it's drawbacks.)

Janis

>
> inotifywait --quiet --monitor --event modify some-file-under-watch | while read change; do
> do-something-here
> done
>
> HY
>