Posted on 2009-05-05 16:25
Prayer 阅读(1969)
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LINUX/UNIX/AIX
system函数已经被收录在标准c库中,可以直接调用
//mainnew.cpp
#include <stdlib.h>
int main(){
system("mkdir $HOME/.SmartPlatform/");
system("mkdir $HOME/.SmartPlatform/Files/");
system("cp mainnew.cpp $HOME/.SmartPlatform/Files/");
return 0;
}
system函数的源码
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <unistd.h>
int system(const char * cmdstring){
pid_t pid;
int status;
if(cmdstring == NULL){
return (1);
}
if((pid = fork())<0){
status = -1;
}
else if(pid = 0){
execl("/bin/sh", "sh", "-c", cmdstring, (char *)0);
-exit(127); //子进程正常执行则不会执行此语句
}
else{
while(waitpid(pid, &status, 0) < 0){
if(errno != EINTER){
status = -1;
break;
}
}
}
return status;