/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.command.common;
import java.io.PrintWriter;
import org.jnode.shell.AbstractCommand;
import org.jnode.vm.VmSystem;
/**
* Show the system uptime.
* @author Petri Airio (petriai@gmailcom)
*/
public class UptimeCommand extends AbstractCommand {
private static final String help_super = "Show the system uptime";
private static final String fmt_time = " up %d day%s, %02d:%02d:%02d%n";
public static void main(String[] args) throws Exception {
new UptimeCommand().execute(args);
}
public UptimeCommand() {
super(help_super);
}
/**
* @throws Exception if something happens
*/
public void execute() throws Exception {
PrintWriter out = getOutput().getPrintWriter();
long ut_secs = VmSystem.currentKernelMillis() / 1000;
int dd = (int) ut_secs / (60 * 60 * 24);
int hh = (int) (ut_secs / (60 * 60)) - (dd * 24);
int mm = (int) (ut_secs / 60) - (dd * 1440) - (hh * 60);
int ss = (int) ut_secs - (dd * 24 * 60 * 60) - (hh * 60 * 60) - (mm * 60);
String sss = "";
if (dd > 1) {
sss = "s";
}
out.format(fmt_time, dd, sss, hh, mm, ss);
}
}