?? filename.cc
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#include <iostream>using namespace std;#include <sys/stat.h>#include <fcntl.h>#include <unistd.h>int main(){ umask(0027); char name[256]; cout << "輸入要創建的文件名:" << endl; cin >> name; if(creat(name, 0666)<0) cout << "創建失敗!" << endl; else cout << "創建成功!" << endl; cout << "輸入要刪除的文件名:" << endl; cin >> name; if(unlink(name)<0) cout << "刪除失敗!" << endl; else cout << "刪除成功!" << endl; char newname[256]; cout << "請輸入要改名的文件:"; cin >> name; if(access(name, F_OK)<0) cout << "不存在" << name << endl; else{ cout << "你對這個文件的權限:"; if(access(name, R_OK)>=0)cout<<"讀"; if(access(name, W_OK)>=0)cout<<"寫"; if(access(name, X_OK)>=0)cout<<"執行"; cout << endl; cout << "請輸入要改成的新名字:"; cin >> newname; if(rename(name, newname)<0) cout << "改名失敗!" << endl; else cout << "改名成功!" << endl; }}
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