#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])

{

    @autoreleasepool {

        //创建文件管理对象

        NSFileManager *fm = [NSFileManager defaultManager];

        //要操作的文件名

        NSString *fname = @"myfile";

        //获取文件的字典

        NSDictionary *attr;

        //当前路径

        NSString *path;

        //获取当前路径

        path = [fm currentDirectoryPath];

        //NSLog(@"\nThe current path is : %@", path);

        //检测文件是否存在

        if ([fm fileExistsAtPath: fname] == NO) {

            //如果不存在则建立一个文件

            [fm createFileAtPath: fname contents: NULL attributes:nil];

            //NSLog(@"\nThe file is not exist!");

            //return 0;

        }

        //拷贝创建一个新文件， 新文件若已存在则报错

        if ([fm copyItemAtPath: fname toPath: @"newFile" error: NULL] == NO) {

            NSLog(@"\n Can't copy the file");

            return ;

        }

        //检测两个文件内容是否相同

        if ([fm contentsEqualAtPath: fname andPath: @"newFile"] == NO) {

            NSLog(@"\nThe contents is not same");

            return ;

        }

        //移动或者改名文件

        if ([fm moveItemAtPath: @"newFile"  toPath: @"myFile2" error:NULL] == NO) {

            NSLog(@"\nCan't change the name");

            return ;

        }

        //获取文件数据字典

        if ((attr = [fm attributesOfItemAtPath: fname error:NULL]) == nil) {

            NSLog(@"\nGet attributets failed");

            return ;

        }

        //文件大小

        NSLog(@"%@", attr[NSFileSize]);

        //文件类型

        NSLog(@"%@", attr[NSFileType]);

        //创建者

        NSLog(@"%@", attr[NSFileOwnerAccountName]);

        //

        NSLog(@"%@", attr[NSFileCreationDate]);

        //显示文件内容

        NSLog(@"\n Show the file contents");

        NSLog(@"\n%@", [NSString stringWithContentsOfFile: fname encoding:NSUTF8StringEncoding error:NULL]);

    }

    return ;

}

 int main(int argc, const char * argv[])

 {

     @autoreleasepool {

         //通过NSDate来完成文件副本制作

         NSFileManager *fm = [NSFileManager defaultManager];

         NSData *dt;

         dt = [fm contentsAtPath: @"myfile"];

         if (dt == nil) {

             NSLog(@"Read file failed....");

             return ;

         }

         //将缓冲区NSData中的内容复制到文件中

         if ([fm createFileAtPath:@"myFavoriteFile" contents: dt attributes:nil] == NO) {

             NSLog(@"Creat backups failed");

             return ;

         }

         //读出文件内容

         NSLog(@"\n%@", [NSString stringWithContentsOfFile:@"myFavoriteFile" encoding: NSUTF8StringEncoding error:NULL]);

     }

     return ;

 }

 #import <Foundation/Foundation.h>

 int main(int argc, const char * argv[])

 {

     @autoreleasepool {

         NSString *newDir = @"newDir";

         NSString *currentPath;

         NSFileManager *fm = [NSFileManager defaultManager];

         //获取当前路径

         currentPath = [fm currentDirectoryPath];

         NSLog(@"\nCurrentpath is : \n%@", currentPath);

         //在当前目录下新建一个目录

         if ([fm createDirectoryAtPath:newDir withIntermediateDirectories:TRUE attributes:nil error:NULL] == NO) {

             NSLog(@"\nCouldn't creat the directory...");

             return ;

         }

         //更改路径名

         if ([fm moveItemAtPath: newDir toPath: @"changeDir" error:NULL] == NO) {

             NSLog(@"\nChange directory name failed");

             return ;

         }

         //更改当前路径

         if ([fm changeCurrentDirectoryPath:@"changeDir"] == NO) {

             NSLog(@"\nChange current directory failed");

             return ;

         }

         NSLog(@"\nAfter change current directory.....");

         currentPath = [fm currentDirectoryPath];

         NSLog(@"\nCurrentpath is : \n%@", currentPath);

     }

     return ;

 }