std::experimental::filesystem::remove, std::experimental::filesystem::remove_all - cppreference.com

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Defined in header `<experimental/filesystem>`
bool remove( const path& p ); bool remove( const path& p, error_code& ec );	(1)	(filesystem TS)
std::uintmax_t remove_all( const path& p ); std::uintmax_t remove_all( const path& p, error_code& ec );	(2)	(filesystem TS)

1) The file or empty directory identified by the path p is deleted as if by the POSIX remove. Symlinks are not followed (symlink is removed, not its target).

2) Deletes the contents of p (if it is a directory) and the contents of all its subdirectories, recursively, then deletes p itself as if by repeatedly applying the POSIX remove. Symlinks are not followed (symlink is removed, not its target).

Parameters

p	-	path to delete
ec	-	out-parameter for error reporting in the non-throwing overload

Return value

1) true if the file was deleted, false if it did not exist. The overload that takes error_code& argument returns false on errors.

2) Returns the number of files and directories that were deleted (which may be zero if p did not exist to begin with). The overload that takes error_code& argument returns static_cast<std::uintmax_t>(-1) on error.

Exceptions

The overload that does not take an error_code& parameter throws filesystem_error on underlying OS API errors, constructed with p as the first argument and the OS error code as the error code argument. std::bad_alloc may be thrown if memory allocation fails. The overload taking an error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. This overload has

Notes

On POSIX systems, this function typically calls unlink and rmdir as needed, on Windows RemoveDirectoryW and DeleteFileW.

Example

#include <cstdint>
#include <experimental/filesystem>
#include <iostream>
namespace fs = std::experimental::filesystem;

int main()
{
    fs::path dir = fs::temp_directory_path();
    fs::create_directories(dir / "abcdef/example");
    std::uintmax_t n = fs::remove_all(dir / "abcdef");
    std::cout << "Deleted " << n << " files or directories\n";
}

Possible output:

Deleted 2 files or directories