shell中小数比较问题

Posted on 2021年11月26日2021年11月26日 by 阿勇

在写一个获取当前系统CPU占用最多一个进程，然后判断这个进程占用CPU超过50%则杀掉他在使用shell进行 […]

Error: Invalid publish topic ‘/s2c/common/#’, does it contain ‘+’ or ‘#’?

Posted on 2021年11月1日 by 阿勇

调用mosquitto_pub命令去给某类topic发消息时提示如下错误 [crayon-6419b2de28 […]

Linux下获取网线插入状态

Posted on 2021年8月10日 by 阿勇

1、检查sys系统文件

cat /sys/class/net/eth0/carrier
#0代表未插入网线，1代表插入网线

1 2	cat /sys/class/net/eth0/carrier #0代表未插入网线，1代表插入网线

2、ifconfig […]

systemctl 如何启动、关闭、启用/禁用服务

Posted on 2021年7月23日 by 阿勇

systemctl 如何启动、关闭、启用/禁用服务

lua数字保留小数点几位数的几个方法

Posted on 2021年3月3日 by 阿勇

1、使用string.format转换，再通过tonumber转换回来 [crayon-6419b2de290 […]

安卓java：检测设备否有GPS模块

Posted on 2021年2月18日 by 阿勇

public boolean hasGPSDevice(Context context)
    {
        final LocationManager mgr = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
        if ( mgr == null )
            return false;
        final List<String> providers = mgr.getAllProviders();
        if ( providers == null ) 
            return false;
        return providers.contains(LocationManager.GPS_PROVIDER);
    }

public boolean hasGPSDevice(Context context)

{

final LocationManager mgr = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);

if ( mgr == null )

return false;

final List<String> providers = mgr.getAllProviders();

if ( providers == null )

return false;

return providers.contains(LocationManager.GPS_PROVIDER);

}

参考：https://blog.csdn.n […]

安卓java：统计指定时间段内的流量信息

Posted on 2021年1月26日2021年1月26日 by 阿勇

import android.app.usage.NetworkStatsManager;

private NetworkStatsManager networkStatsManager;
networkStatsManager = (NetworkStatsManager) context.getApplicationContext().getSystemService(NETWORK_STATS_SERVICE);
       
 NetworkStats.Bucket bucket = null;
        bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), monthStart, System.currentTimeMillis());
        Logger.i("month Total rx: " + bucket.getRxBytes() +"  tx = " + bucket.getTxBytes());
        bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), todayStart, System.currentTimeMillis());
        Logger.i("today Total rx: " + bucket.getRxBytes() +"  tx = " + bucket.getTxBytes());

import android.app.usage.NetworkStatsManager;

private NetworkStatsManager networkStatsManager;

networkStatsManager = (NetworkStatsManager) context.getApplicationContext().getSystemService(NETWORK_STATS_SERVICE);

NetworkStats.Bucket bucket = null;

bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), monthStart, System.currentTimeMillis());

Logger.i("month Total rx: " + bucket.getRxBytes() +" tx = " + bucket.getTxBytes());

bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), todayStart, System.currentTimeMillis());

Logger.i("today Total rx: " + bucket.getRxBytes() +" tx = " + bucket.getTxBytes());

使用networkStatsManager. […]

安卓java：获取月初的时间戳

Posted on 2021年1月26日 by 阿勇

    public static long getTimestampOfbeginningMonth(){
        /*
        // 获取当前年份、月份、日期
        Calendar cale = null;
        cale = Calendar.getInstance();
        int year = cale.get(Calendar.YEAR);
        int month = cale.get(Calendar.MONTH) + 1;
        int day = cale.get(Calendar.DATE);
        int hour = cale.get(Calendar.HOUR_OF_DAY);
        int minute = cale.get(Calendar.MINUTE);
        int second = cale.get(Calendar.SECOND);
        int dow = cale.get(Calendar.DAY_OF_WEEK);
        int dom = cale.get(Calendar.DAY_OF_MONTH);
        int doy = cale.get(Calendar.DAY_OF_YEAR);

        ShuncomLogger.i("Current Date: " + cale.getTime());
        ShuncomLogger.i("Year: " + year);
        ShuncomLogger.i("Month: " + month);
        ShuncomLogger.i("Day: " + day);
        ShuncomLogger.i("Hour: " + hour);
        ShuncomLogger.i("Minute: " + minute);
        ShuncomLogger.i("Second: " + second);
        ShuncomLogger.i("Day of Week: " + dow);
        ShuncomLogger.i("Day of Month: " + dom);
        ShuncomLogger.i("Day of Year: " + doy);

        // 获取当月第一天和最后一天
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String firstday, lastday;
        // 获取前月的第一天
        cale = Calendar.getInstance();
        cale.add(Calendar.MONTH, 0);
        cale.set(Calendar.DAY_OF_MONTH, 1);
        firstday = format.format(cale.getTime());
        // 获取前月的最后一天
        cale = Calendar.getInstance();
        cale.add(Calendar.MONTH, 1);
        cale.set(Calendar.DAY_OF_MONTH, 0);
        lastday = format.format(cale.getTime());
        ShuncomLogger.i("本月第一天和最后一天分别是 ： " + firstday + " and " + lastday);
*/
        Calendar calendar = Calendar.getInstance();// 获取当前日期
        calendar.add(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        ShuncomLogger.i("月初的时间戳："+String.valueOf(calendar.getTimeInMillis()));

        return calendar.getTimeInMillis();

    }
    public static long getTimestampOfbeginningToday(){
        Calendar calendar = Calendar.getInstance();// 获取当前日期
        //calendar.add(Calendar.MONTH, 0);
        //calendar.add(Calendar.DAY_OF_MONTH, 0);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        ShuncomLogger.i("今天开始的时间戳："+String.valueOf(calendar.getTimeInMillis()));

        return calendar.getTimeInMillis();

    }

public static long getTimestampOfbeginningMonth(){

// 获取当前年份、月份、日期

Calendar cale = null;

cale = Calendar.getInstance();

int year = cale.get(Calendar.YEAR);

int month = cale.get(Calendar.MONTH) + 1;

int day = cale.get(Calendar.DATE);

int hour = cale.get(Calendar.HOUR_OF_DAY);

int minute = cale.get(Calendar.MINUTE);

int second = cale.get(Calendar.SECOND);

int dow = cale.get(Calendar.DAY_OF_WEEK);

int dom = cale.get(Calendar.DAY_OF_MONTH);

int doy = cale.get(Calendar.DAY_OF_YEAR);

ShuncomLogger.i("Current Date: " + cale.getTime());

ShuncomLogger.i("Year: " + year);

ShuncomLogger.i("Month: " + month);

ShuncomLogger.i("Day: " + day);

ShuncomLogger.i("Hour: " + hour);

ShuncomLogger.i("Minute: " + minute);

ShuncomLogger.i("Second: " + second);

ShuncomLogger.i("Day of Week: " + dow);

ShuncomLogger.i("Day of Month: " + dom);

ShuncomLogger.i("Day of Year: " + doy);

// 获取当月第一天和最后一天

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

String firstday, lastday;

// 获取前月的第一天

cale = Calendar.getInstance();

cale.add(Calendar.MONTH, 0);

cale.set(Calendar.DAY_OF_MONTH, 1);

firstday = format.format(cale.getTime());

// 获取前月的最后一天

cale = Calendar.getInstance();

cale.add(Calendar.MONTH, 1);

cale.set(Calendar.DAY_OF_MONTH, 0);

lastday = format.format(cale.getTime());

ShuncomLogger.i("本月第一天和最后一天分别是： " + firstday + " and " + lastday);

Calendar calendar = Calendar.getInstance();// 获取当前日期

calendar.add(Calendar.MONTH, 0);

calendar.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天

calendar.set(Calendar.HOUR_OF_DAY, 0);

calendar.set(Calendar.MINUTE, 0);

calendar.set(Calendar.SECOND, 0);

ShuncomLogger.i("月初的时间戳："+String.valueOf(calendar.getTimeInMillis()));

return calendar.getTimeInMillis();

}

public static long getTimestampOfbeginningToday(){

Calendar calendar = Calendar.getInstance();// 获取当前日期

//calendar.add(Calendar.MONTH, 0);

//calendar.add(Calendar.DAY_OF_MONTH, 0);

calendar.set(Calendar.HOUR_OF_DAY, 0);

calendar.set(Calendar.MINUTE, 0);

calendar.set(Calendar.SECOND, 0);

ShuncomLogger.i("今天开始的时间戳："+String.valueOf(calendar.getTimeInMillis()));

return calendar.getTimeInMillis();

}

shell脚本中无法执行source命令

Posted on 2020年12月8日 by 阿勇

今天写了个简单的自动编译脚本，在执行编译前需要先引入一个环境变量文件，用到了source命令然后执行脚本时却 […]

openwrt linux下gpio watchdog dts文件配置

Posted on 2020年11月13日2020年11月13日 by 阿勇

由于项目需要，网关需要外接硬件看门狗，而且从网关上电开始就要开始喂狗，从uboot的代码中就开始了喂狗操作而 […]

中国移动光猫网关samba文件共享

Posted on 2020年11月1日 by 阿勇

家里拉了中国移动的光纤，送了光猫，带有USB口，可以做文件共享和USB打印机共享进入光猫的超级管理界面（进入 […]

OpenWrt下载网

openwrtdl.com分享下载

shell中小数比较问题

Error: Invalid publish topic ‘/s2c/common/#’, does it contain ‘+’ or ‘#’?

Linux下获取网线插入状态

systemctl 如何启动、关闭、启用/禁用服务

lua数字保留小数点几位数的几个方法

安卓java：检测设备否有GPS模块

安卓java：统计指定时间段内的流量信息

安卓java：获取月初的时间戳

shell脚本中无法执行source命令

openwrt linux下gpio watchdog dts文件配置

中国移动光猫网关samba文件共享