Here’s code that I’ve verified to work. I use it for spawning MSBuild and listening to its output: process.StartInfo.UseShellExecute = false; process.StartInfo.RedirectStandardOutput = true; process.OutputDataReceived += (sender, args) => Console.WriteLine(“received output: {0}”, args.Data); process.Start(); process.BeginOutputReadLine();
From this forum, credit to ‘Josh’. Application.Quit() and Process.Kill() are possible solutions, but have proven to be unreliable. When your main application dies, you are still left with child processes running. What we really want is for the child processes to die as soon as the main process dies. The solution is to use “job … Read more
This is a way to do it with the name: Process[] pname = Process.GetProcessesByName(“notepad”); if (pname.Length == 0) MessageBox.Show(“nothing”); else MessageBox.Show(“run”); You can loop all process to get the ID for later manipulation: Process[] processlist = Process.GetProcesses(); foreach(Process theprocess in processlist){ Console.WriteLine(“Process: {0} ID: {1}”, theprocess.ProcessName, theprocess.Id); }
Spawn is a command designed to run system commands. When you run spawn, you send it a system command that will be run on its own process, but does not execute any further code within your node process. You can add listeners for the process you have spawned, to allow your code interact with the … Read more
As suggested by Matt Hamilton, the quick approach where you have limited control over the process, is to use the static Start method on the System.Diagnostics.Process class… using System.Diagnostics; … Process.Start(“process.exe”); The alternative is to use an instance of the Process class. This allows much more control over the process including scheduling, the type of … Read more
Using pgrep to get pid’s of matching command lines: top -c -p $(pgrep -d’,’ -f string_to_match_in_cmd_line) top -p expects a comma separated list of pids so we use -d’,’ in pgrep. The -f flag in pgrep makes it match the command line instead of program name.
What Giulio Franco says is true for multithreading vs. multiprocessing in general. However, Python* has an added issue: There’s a Global Interpreter Lock that prevents two threads in the same process from running Python code at the same time. This means that if you have 8 cores, and change your code to use 8 threads, … Read more
To wait for any process to finish Linux (doesn’t work on Alpine, where ash doesn’t support tail –pid): tail –pid=$pid -f /dev/null Darwin (requires that $pid has open files): lsof -p $pid +r 1 &>/dev/null With timeout (seconds) Linux: timeout $timeout tail –pid=$pid -f /dev/null Darwin (requires that $pid has open files): lsof -p $pid … Read more
This is the sort of code that we shouldn’t be doing ourselves. Use libraries for the mundane stuff, save your brain for the hard stuff. In this case, I recommend using FilenameUtils.removeExtension() from Apache Commons IO
Using the auxww flags, you will see the full path to output in both your terminal window and from shell scripts. darragh@darraghserver ~ $uname -a SunOS darraghserver 5.10 Generic_142901-13 i86pc i386 i86pc darragh@darraghserver ~ $which ps /usr/bin/ps<br> darragh@darraghserver ~ $/usr/ucb/ps auxww | grep ps darragh 13680 0.0 0.0 3872 3152 pts/1 O 14:39:32 0:00 /usr/ucb/ps … Read more