Java gets Linux uptime and friendly display

First, uptime command

Uptime command to view system uptime and load

Terminal input uptime04:03:58 up ten days, 13:19, 1 user, load average:0.54, 0.40, 0.20

• Current Time 04:03:58
• The system has been running for ten days, 13:19
• Current users online 1 user
• Average load: 0.54, 0.40, 0.20, last 1 minutes, 5 minutes, 15 minutes system load

Obviously the data is not displayed to the user to see, the more friendly display of the running time code

Second, Uptimeutil

Package Com.starfast.web.util;import java.io.inputstreamreader;import java.io.linenumberreader;/** * get device run time * * @     Author Duchong * @since 2018-06-28 14:28 **/public class Uptimeutil {/** * get results of Linux command execution, cat-like * @param cmd        * @return */public static string Getcmdresult (string cmd) {string result = "";            try {Process process = Runtime.getruntime (). exec (CMD);            InputStreamReader ir = new InputStreamReader (Process.getinputstream ());            LineNumberReader input = new LineNumberReader (IR);            String Line;            while (line = Input.readline ()) = null) {result=line;        }} catch (Java.io.IOException e) {System.err.println ("IOException" + e.getmessage ());    } return result;         /** * Returns the elapsed time in seconds * @return */public static string Getuptimesecond (String str) {string time=null; if (Str.contains (",")) {String [] Strarr=str.split (",");                if (strarr.length>2) {int hms=0;                int days=0; if (Str.contains ("Days")) {//Intercept to day String day=strarr[0].substring (Strarr[0].indexof ("U                    P ") +2,strarr[0].indexof (" Days ")). Trim ();                    Number of seconds Days=integer.parseint (day) * 24 * 3600;                Number of seconds Hms=integer.parseint (Gethms (Strarr[1].replace ("Min", ""). Trim ()));                    } else{String hmsstr=strarr[0].substring (Strarr[0].indexof ("Up") +2);                Hms=integer.parseint (Gethms (Hmsstr.replace ("Min", ""). Trim ()));                } Integer totaltime=days+hms;            Time=totaltime.tostring ();    }} return time; }/** * Gets the number of seconds in the intermediate field * @param str * @return */public static string Gethms (String str) {string R        Esult=null;        Integer hms=0; if (str.cOntains (":")) {String [] hmsarr=str.split ("\ \:");            int length=hmsarr.length;                    Switch (length) {///Only SEC case 1:hms+=integer.parseint (hmsarr[0]);                Break                    Time Division Case 2:hms+= (Integer.parseint (hmsarr[0]) * 3600 + integer.parseint (hmsarr[1]) *60);                Break Time Division second case 3:hms+= (Integer.parseint (hmsarr[0]) * 3600 + integer.parseint (hmsarr[1]) *60 +integer.parseint (H                    MSARR[2]));            Break        }} else{//Does not contain: can only be divided Hms+=integer.parseint (str) * 60;        } if (hms>0) {result=hms.tostring ();    } return result; }/** * Calculates the time interval based on the number of milliseconds, format: Several hours a day * * @param timemillisbetweentwodate * @return */public static Strin        G Calculateinterval (Long timemillisbetweentwodate) {if (timemillisbetweentwodate = = 0) {return "0 minutes";} StringBuilder str = new StringBuilder ();        Long p = math.abs (timemillisbetweentwodate);        Long day = p/(24 * 3600000);        if (Day > 0) {str.append. Append ("Days");        p = p% (24 * 3600000);        Long hour = p/(3600000);        if (Hour > 0) {str.append (hour). Append ("hours");        } p = p% (3600000);        Long minute = P/(60000);        if (Minute > 0) {str.append (minute). Append ("minutes");        } p = p% (60000);        Long second = P/(1000);        if (Second > 0) {str.append (second). Append ("seconds");    } return str.tostring (); /** * Linux system gets run time * @return */public static String Getrouteruptime () {return Getuptimeseco    nd (Getcmdresult ("uptime")); } public static void Main (string[] args) {String s1= ' 14:08:51 up 3 days, 1:04, 2 users, load average:0.00,        0.00, 0.00 "; String s2= "14:13:34 up 5:06, 4 users, load average:0.00, 0.01, 0.05 ";        String s3= "16:41:19 up 8 min, 2 users, load average:0.56, 0.39, 0.17";        String s4= "18:03:32 up, 3 users, Load average:0.06, 0.09, 0.11";    System.out.println (Calculateinterval (Getuptimesecond (S3) * 1000)); }}

Java gets Linux uptime and friendly display