LINUX下C++程式設計如何獲得某程序的ID
阿新 • • 發佈:2018-11-11
#include <stdio.h> #include <stdlib.h> #include <unistd.h> using namespace std; pid_t getProcessPidByName(const char *proc_name) { FILE *fp; char buf[100]; char cmd[200] = {'\0'}; pid_t pid = -1; sprintf(cmd, "pidof %s", proc_name); if((fp = popen(cmd, "r")) != NULL) { if(fgets(buf, 255, fp) != NULL) { pid = atoi(buf); } } printf("pid = %d \n", pid); pclose(fp); return pid; } int main(int argc, char** argv) { if(argc != 2) { printf("Invalid input! \n"); return-1; } char* process_name = argv[1]; pid_t process_pid = getProcessIDByName((const char*)process_name); return 0; }