I need a program that will need to be listening in a linux folder for new files and then take the file to be an argument of my program and process it (do the rest of the stuffs)....

how can do it in C++ ? Thank You

inotify is your friend

Thanks for the helping...

I am not a good c++ programer.. in fact I am just begging...

The examples I see from internet all is for add the watched folder as argument to the main. And then use that argument on inotify_add_watch, like that:

wd = inotify_add_watch(fd, argv[1], IN_CREATE | IN_MODIFY | IN_DELETE);

However I don't want to use an argument. I will specify the path myself. But it is not working. I should put a "const char" but no matter what I tried nothing works....

wd = inotify_add_watch(fd, "/test", IN_CREATE | IN_MODIFY | IN_DELETE); --> did NOT work

if I declare variable for example:
const char testDIR = "/test";
wd = inotify_add_watch(fd, testDIR , IN_CREATE | IN_MODIFY | IN_DELETE); --> did NOT work

If I use pointer also it does not work
const char *testDIR = "/test";
wd = inotify_add_watch(fd, *testDIR , IN_CREATE | IN_MODIFY | IN_DELETE); --> did NOT work


Can you help me? Thanks in advance.

Never mind I got it working...

The correct is

const char* testDIR = "/test";

Remember that in the 'main' function, char * argv[] which is an array of pointers to char is a hold-over from the olden-days of plain-C.
I've written lots of plain-C and a fair amount of C++. Many libraries still rely on the plain-C arguments so this exact issue continues to trip folks.

Don't forget to mark your thread [SOLVED] if that is the case.

Also, if you can, consider posting your utility -- or the relevant fragment to this thread so that others can learn too.

Cordialement,
~~~ 8d;-Dan