目录操作，mac os 16-5

#import <Foundation/Foundation.h>int main(int argc, const char * argv[]){    @autoreleasepool {                NSString    *fName = @"path.m";        NSFileManager   *fm;        NSString    *path, *tempdir, *extension, *homedir, *fullpath;        NSArray     *components;                fm = [NSFileManager defaultManager];                //temp work dir        tempdir = NSTemporaryDirectory();        NSLog(@"\nTemporary Directory is %@", tempdir);                //current dir get base dir        path = [fm currentDirectoryPath];        NSLog(@"\nBase dir is %@", [path lastPathComponent]);                //create file fName in current dir ,all path        fullpath = [path stringByAppendingPathComponent: fName];        NSLog(@"\nfullpath to %@ is %@", fName, fullpath);                //get file extension name        extension = [fullpath pathExtension];        NSLog(@"\nextension for %@ is %@", fullpath, extension);                //get user main dir        homedir = NSHomeDirectory();        NSLog(@"\nYour home directory is %@", homedir);                components = [homedir pathComponents];        for( path in components)            NSLog(@"%@", path);    }    return 0;}