linux C 执行shell脚步

1.system(const char* command)
system(“pstree”);
system(“myshell.sh 1>>/dev/null 2 >>/dev/null”);
2.FILE* fp=popen(const char* command, const char* type)
pclose(fp);
fp = popen(“ps -ef”, “r”);以读形式大概文件流，最后关闭文件流
pclose(fp);