writes:
Hello,
I am trying to write a program in C++ and I need to check to see if a
directory exists, if not create it, move a file and verify that all works
well. How do I go about this in Linux?
To check if a directory exists:
extern "C" {
#include
#include
#include
}
#include <iostream>
using namespace std;
struct stat dir_stat;
int main(int argc, char* argv[]) {
stat(argv[1], &dir_stat);
if (S_ISDIR(dir_stat.st_mode)) {
cout << argv[1] << " is a directory" << endl;
} else {
cout << argv[1] << " is a NOT directory" << endl;
}
}
markgray@soyo:/ARK/BOOKS/Efficient_c++> g++ -Wall dircheck.cpp
markgray@soyo:/ARK/BOOKS/Efficient_c++> ./a.out /tmp
/tmp is a directory
markgray@soyo:/ARK/BOOKS/Efficient_c++> ./a.out dircheck.cpp
dircheck.cpp is a NOT directory
markgray@soyo:/ARK/BOOKS/Efficient_c++> ./a.out no_such_thing
no_such_thing is a NOT directory
markgray@soyo:/ARK/BOOKS/Efficient_c++>
See man 2 stat. (You will be advised of course to check out the other
macros described in the man page).
To create a directory, see man 2 mkdir.
To move a file, see man 2 rename.
Hope this helps.
[snip]
Mark Gray