process | 易学教程

C#, Process.Start hide?

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问题 public static void Main(string[] args){ SearchGoogle("Test"); Console.ReadKey(true); } static void SearchGoogle(string t){ Process.Start("http://google.com/search?q=" + t); } Is there any way to hide the browser, so it won't pop up?? 回答1: Something like: ProcessStartInfo startInfo = new ProcessStartInfo("http://google.com/search?q=" + t); startInfo.WindowStyle = ProcessWindowStyle.Hidden; Process.Start(startInfo); 回答2: Perhaps you are looking for ProcessStartInfo.CreateNoWindow ? 回答3: If you

Does use of recursive process.nexttick let other processes or threads work?

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问题 Technically when we execute the following code(recursive process.nexttick), the CPU usage would get to 100% or near. The question is the imagining that I'm running on a machine with one CPU and there's another process of node HTTP server working, how does it affect it? Does the thread doing recursive process.nexttick let the HTTP server work at all? If we have two threads of recursive process.nexttick, do they both get 50% share? Since I don't know any machine with one core cannot try it. And

Does use of recursive process.nexttick let other processes or threads work?

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How to kill a nodejs process in Linux?

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问题 tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 9631/node How do I kill this process in linux(ubuntu)? 回答1: sudo netstat -lpn |grep :'3000' 3000 is port i was looking for, After first command you will have Process ID for that port kill -9 1192 in my case 1192 was process Id of process running on 3000 PORT use -9 for Force kill the process 回答2: pkill is the easiest command line utility pkill -f node or pkill -f nodejs whatever name the process runs as for your os 回答3: You can use the killall command as

Symfony2 - process launching a symfony2 command

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问题 My goal is to launch some time consuming functions in the background to avoid user to wait before the server response is rendered. I have a Symfony project where I am launching an asynchronous process from a controller. This process will launch a Symfony command that will call another controller. The problem is when I am calling the process with start() $process = new Process('/usr/bin/php '.$this->get('kernel')->getRootDir().'/console scopusftpupload ' . escapeshellcmd($params)); $process-

Why zombie processes exist?

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问题 Wikipedia says "A child process that terminates but is never waited on by its parent becomes a zombie process." I run this program: #include <stdio.h> #include <unistd.h> #include <stdlib.h> int main() { pid_t pid, ppid; printf("Hello World1\n"); pid=fork(); if(pid==0) { exit(0); } else { while(1) { printf("I am the parent\n"); printf("The PID of parent is %d\n",getpid()); printf("The PID of parent of parent is %d\n",getppid()); sleep(2); } } } This creates a zombie process, but I can't

How do I add timestamps to individual lines of PowerShell & output?

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问题 How, if at all, is it possible to add timestamps to each line of an output generated by the & PowerShell operator? Example: PS H:\> $result = & ping 192.168.1.1 PS H:\> echo $result Pinging 192.168.1.1 with 32 bytes of data: Reply from 192.168.1.1: bytes=32 time=104ms TTL=250 Reply from 192.168.1.1: bytes=32 time=106ms TTL=250 Reply from 192.168.1.1: bytes=32 time=102ms TTL=250 Reply from 192.168.1.1: bytes=32 time=102ms TTL=250 Ping statistics for 192.168.1.1: Packets: Sent = 4, Received = 4

How to use Fork() to create only 2 child processes?

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问题 I'm starting to learn some C and while studying the fork, wait functions I got to a unexpected output. At least for me. Is there any way to create only 2 child processes from the parent? Here my code: #include <sys/types.h> #include <stdio.h> #include <unistd.h> #include <sys/wait.h> int main () { /* Create the pipe */ int fd [2]; pipe(fd); pid_t pid; pid_t pidb; pid = fork (); pidb = fork (); if (pid < 0) { printf ("Fork Failed\n"); return -1; } else if (pid == 0) { //printf("I'm the child\n

How to send keys instead of characters to a process?

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问题 System.Diagnostics.Process exposes a StreamWriter named StandardInput, which accepts only characters as far as I know. But I need to send keystrokes as well, and some keystrokes don't map well to characters. What should I do? 回答1: You are mixing input streams with control signals. A console process has a default input stream which you can control with the StandardInput, as you already know. But Ctrl-C and Ctrl-Break are not characters sent to the process through this stream, but instead they

ps、pstree、top命令

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ps -l [ root@i-ka ~ ] #ps -l F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD 4 S 0 17236 17233 0 80 0 - 28946 wait pts/0 00:00:00 bash 0 R 0 17274 17236 0 80 0 - 37233 - pts/0 00:00:00 ps 每个项目的意义简单说明如下： F (flag)：代表程序的总结旗标，常见为4 代表root S (stat)：状态列，主要的分类项目有： R (Running)：该程式正在运作中； S (Sleep)：该程式目前正在睡眠状态(idle)，但可以被唤醒(signal)。 D ：不可被唤醒的睡眠状态，通常这支程式可能在等待I/O 的情况(ex>列印) T ：停止状态(stop)，可能是在工作控制(背景暂停)或除错(traced) 状态； Z (Zombie)：僵尸状态，程序已经终止但却无法被移除至记忆体外。 UID/PID/PPID：代表『此程序被该UID 所拥有/程序的PID 号码/此程序的父程序PID 号码』 C：代表CPU 使用率，单位为百分比； PRI/NI：Priority/Nice 的缩写，代表此程序被CPU 所执行的优先顺序，数值越小代表该程序越快被CPU 执行。 ADDR/SZ/WCHAN