Let's write an ugly c and c++ mixed mytouch
Sometimes we want to execute touch to automatically generate a c file containing the header file we want, but we will find that the files touched under linux are all empty. When I saw that an empty c file was opened under the Apple system, the initial c program in the following form would be automatically written for you.
#include<stdio.h>
int main(int argc,char**argv)
{
return 0;
}
Can we do this kind of tricks under linux? The answer is yes.
We only need to learn a little file operation.
Not only can you configure c, you can even configure any cpp, java initialization files you want
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include<sys/mman.h>
#include<pthread.h>
#include<semaphore.h>
#include <netinet/in.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<sys/select.h>
#include<sys/epoll.h>
#include<dirent.h>
#include<pwd.h>
#include<grp.h>
#include<time.h>
#include<errno.h>
#include<iostream>
#include<string>
#include<fstream>
using namespace std;
#define CONFIGTXT "/home/adl/桌面/linux/小组任务/mytouch.txt"
/*
这里填你需要初始化文件的.txt文件名（其实.c也可），注意要绝对路径。
把你需要的头文件啊，main函数啊都写到.txt中，之后需要从中读取
*/
//我这不伦不类的用了string和char[]不美观！
void mytouch(char*writeFileName,string&configFileName)
{
string line;
struct stat statbuf;
if(lstat(writeFileName,&statbuf)==-1){
//判断我们需要创建文件是否存在,存在我们就先别覆盖，
//我觉得覆盖太危险，就直接忽略，当然你可以去自个处理覆盖与否（这里用下c）
ifstream is(configFileName);
if(!is){
cerr<<"出错了-----没有配置"<<endl;is.close();exit(1);}
/*判断配置文件是否存在（这里用了点c++）*/
ofstream os(writeFileName,ofstream::out|ofstream::trunc);
/*从配置中一行一行读，再一行一行写入新文件中*/
while(getline(is,line)){
os<<line<<endl;
}
os.close();
}else{
puts("文件已经存在,先不操作");
exit(1);
}
}
int main(int argc,char**argv)
{
string configtxt(CONFIGTXT);//默认配置
if(argc==1){
puts("参数少！");
exit(1);
}else if(argc==2){
mytouch(argv[1],configtxt);//如果有俩参数则第二个参数就是你想创建的c文件
}else if(argc==3){
configtxt=argv[2];
mytouch(argv[1],configtxt);//如果有仨参数则第三个参数是配置文件（可以是别的类型的文件）
}
return 0;
}
Ah, that's it, put this directory into /etc/environment, and then source /etc/environment at the
end
$ mytouch success.c
My results! ! !
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include<sys/mman.h>
#include<pthread.h>
#include<semaphore.h>
#include <netinet/in.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<sys/select.h>
#include<sys/epoll.h>
#include<dirent.h>
#include<pwd.h>
#include<grp.h>
#include<time.h>
#include<errno.h>
#include<signal.h>
#include<fcntl.h>
int main(int argc,char**argv)
{
return 0;
}
Yeah~ It's fun to do what you want!