问题
I have the ID (pid) of this process.
Now i want to find out when the process with this id has started.
Note1: The process is not a java thread. Note2: JNA Solutions would also be welcome
From my java context i want to get this information.
How can it be done?
UPDATE: see Note2.
回答1:
On linux (I am running Ubuntu 14)
public class SO {
public static void main(String[] args) throws Exception {
System.out.println(getStartTime(29489));
}
private static String getStartTime(int pid) throws IOException {
String start = null;
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec("ps -ewo pid,lstart");
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null) {
line = line.trim();
if (line.startsWith(pid+" ")) {
int firstSpace = line.indexOf(" ");
start = line.substring(firstSpace+1);
break;
}
}
return start;
}
}
Output
Wed Apr 13 21:13:10 2016
Verifying through command line
xxx@xxx:~$ ps -ewo pid,lstart | grep 29489
29489 Wed Apr 13 21:13:10 2016
来源：https://stackoverflow.com/questions/36622016/get-starttime-of-a-process-in-windows-linux