Linux 进程替换(exec函数）实现代码
# include<stdio.h> #include<stdlib.h> #include<unistd.h> #include<fcntl.h> #include<sys/types.h> #include<sys/stat.h> #include<string.h> int main() {
pid_t id=fork();
if(id==0) {
printf("child is runningn");
sleep(1);
char* env[]={
"MYENV=/A/B/C/D/AAAA",NULL}
;
char* argv[]={
"ls","-l","-n","-i",NULL}
;
// execl("/bin/ls","ls","-l","-n","-i",NULL);
// execlp("ls","ls","-l","-n","-i",NULL);
// execv("/bin/ls",argv);
// execvp("ls",argv);
// execle("./myenv","myenv",NULL,env);
execve("./myenv",argv,env);
printf("child id donen");
//exec成功的话不执行此语句 exit(1);
}
else {
pid_t ret=waitpid(id, NULL,0);
if(ret>0) {
printf("father wait successn");
}
else{
printf("child quit not normaln");
}
}
return 0;
}
下图就是execl execlp execv execvp的结果图
下图是execle execve的结果图
感谢阅读，希望能帮助到大家，谢谢大家对对本知道支持！
