<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Firstlijinke的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Firstlijinke</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Firstlijinke]]></copyright><item><title><![CDATA[Qt5中报错：QTableWidget: cannot insert an item that is already owned by another QTableWidget]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/144402920</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/144402920</guid><author>Firstlijinke</author><pubDate>Wed, 11 Dec 2024 16:02:08 +0800</pubDate><description><![CDATA[若在循环开始前声明此变量，则会报这个错误。放到循环内问题解决。]]></description><category></category></item><item><title><![CDATA[Linux基础-线程]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/129259549</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/129259549</guid><author>Firstlijinke</author><pubDate>Fri, 10 Mar 2023 15:45:47 +0800</pubDate><description><![CDATA[由于进程在切换时系统开销大，因此很多操作系统引入了轻量级进程LWP，同一进程中的线程共享相同地址空间，Linux不区分进程、线程。]]></description><category></category></item><item><title><![CDATA[Linux进程-守护进程]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/129172262</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/129172262</guid><author>Firstlijinke</author><pubDate>Thu, 23 Feb 2023 13:32:36 +0800</pubDate><description><![CDATA[linux三种进程类型之一，是一个在后台运行并且不受任何终端控制的进程。它的生存期较长，通常独立于控制终端并且周期性地执行某种任务或等待处理某些发生的事件。Linux系统的大多数服务器就是通过守护进程实现的。常见的守护进程包括系统日志进程syslogd、 web服务器httpd、邮件服务器sendmail和数据库服务器mysqld等。守护进程一般在系统启动时开始运行，除非强行终止，否则直到系统关机都保持运行。]]></description><category></category></item><item><title><![CDATA[Linux进程基础- exec、system函数]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/128982565</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/128982565</guid><author>Firstlijinke</author><pubDate>Wed, 22 Feb 2023 22:34:40 +0800</pubDate><description><![CDATA[★  exec函数族★  system命令。]]></description><category></category></item><item><title><![CDATA[Ubuntu16.04中安装qt5.12.9，并建立桌面快捷方式]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/125257233</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/125257233</guid><author>Firstlijinke</author><pubDate>Mon, 13 Jun 2022 13:14:03 +0800</pubDate><description><![CDATA[本文主要介绍了Ubuntu16中安装qt5，Ubuntu系统汉化设置，qt5软件汉字输入法安装及建立桌面快捷方式的方法。]]></description><category></category></item><item><title><![CDATA[Curl读取网页数据]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/125019089</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/125019089</guid><author>Firstlijinke</author><pubDate>Sat, 28 May 2022 16:10:05 +0800</pubDate><description><![CDATA[1. 创建一个curl.cpp 文件代码如下


#include &lt;curl/curl.h&gt;
#include &lt;iostream&gt;

using namespace std;

int main()
{
	CURL *curl = curl_easy_init();  // 初始化
	if (!curl)
	{
		cout &lt;&lt; "curl is fail" &lt;&lt; endl;
	}

	curl_easy_setopt(curl,CURLOPT_URL,]]></description><category></category></item><item><title><![CDATA[CAD中添加A4边框、画箭头、斜线延长、添加特殊符号（矢量标记）]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/125004503</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/125004503</guid><author>Firstlijinke</author><pubDate>Fri, 27 May 2022 16:07:47 +0800</pubDate><description><![CDATA[今天使用CAD画凸极发电机电势向量图时，遇到几个问题，现在想把这些问题和解决办法都记录下来，便于以后查询。

1. CAD中添加A4纸边框

1.1 调整单位



1.2 画矩形框



输入命令D（尺寸）



输出：长度为297mm，宽度为210mm的矩形





得到一个长方形再按偏移命令并选中长方形后输入偏移量为5mm



偏移两次得到两个边框（5mm、25mm）



画两条延长线，然后使用修建命令进行修建。





修建完毕后，最后将边框线型设置为0.7mm，并将边框创...]]></description><category></category></item><item><title><![CDATA[Ubuntu16中简单OpenCV练习]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/124973314</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/124973314</guid><author>Firstlijinke</author><pubDate>Wed, 25 May 2022 20:52:45 +0800</pubDate><description><![CDATA[1. 下载Ubuntu16文件后安装vim和OpenCV组件，如图首先更新下载更新镜像地址。

2. 更新到国内下载地址。



3. 更新列表安装组件。



4.安装系统依赖包和OpenCV库。





5. 查看OpenCV库是否已安装完毕。



6.编写简单的OpenCV图片显示10秒的程序image.cpp



注意程序中"./1213.jpg"表示当前文件夹下的1213.jpg图片（可以改成自己喜欢的图片），图片名字不要写错哦。



7.编译文件(注意要添加依赖库)

$: g++...]]></description><category></category></item><item><title><![CDATA[syntax error end of file unexpected]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/120067690</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/120067690</guid><author>Firstlijinke</author><pubDate>Thu, 02 Sep 2021 18:56:59 +0800</pubDate><description><![CDATA[最近在学习jz2440时，编译文件遇到syntax error end of file unexpected错误，如下图所示



查询资料后发现原来是在windows中编写的文件格式为dos，如文件要放到linux中交叉编译需将文件格式设置为unix格式。

    在vi中命令模式下使用set fileformat 或set ff 查看文件格式，若为dos格式，则使用setfileformat=unix或set ff=unix 然后：wq保存文件并退出即可。如下图：






...]]></description><category></category></item><item><title><![CDATA[built-in function 错误的解决]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78240054</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78240054</guid><author>Firstlijinke</author><pubDate>Sun, 15 Oct 2017 13:32:25 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[Linux中编译文件时提示：arm-elf-gcc: leds.o : No such file or directory 错误的解决办法]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78013983</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78013983</guid><author>Firstlijinke</author><pubDate>Sun, 17 Sep 2017 22:03:03 +0800</pubDate><description><![CDATA[今天写了一个led的驱动程序，进行编译时提示：arm-elf-gcc  -o -c leds.o led.S  ; arm-elf-gcc :leds.o : No such file or directory错误，如图。
将arm-elf-gcc -o -c leds.o leds.s修改为arm-elf-gcc -c -o leds.o leds.s后程序编译正确。
    若将arm-e]]></description><category></category></item><item><title><![CDATA[ARM汇编指令MCR/MRC学习]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78007836</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78007836</guid><author>Firstlijinke</author><pubDate>Sun, 17 Sep 2017 00:29:59 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[S3C2440处理器结构]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78007757</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78007757</guid><author>Firstlijinke</author><pubDate>Sun, 17 Sep 2017 00:10:56 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[把一件事坚持30天]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78006229</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78006229</guid><author>Firstlijinke</author><pubDate>Sat, 16 Sep 2017 20:24:36 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[你就毁在“等有时间再做”]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78006213</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78006213</guid><author>Firstlijinke</author><pubDate>Sat, 16 Sep 2017 20:21:19 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[“ipconfig不是内部命令或外部命令”解决方法]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78003277</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78003277</guid><author>Firstlijinke</author><pubDate>Sat, 16 Sep 2017 14:17:14 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[vmware中ubuntu通过主机无线进行上网，但是ping不通]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/78002040</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/78002040</guid><author>Firstlijinke</author><pubDate>Sat, 16 Sep 2017 11:01:04 +0800</pubDate><description><![CDATA[1、首先关闭正在运行中的ubuntu软件。
2、设置VMware中Setting...中为桥接模式。


2、打开Edit -> virtual Network Editor ... -> Host Virtual Network Mapping 中VMnet0:选择无线网卡（Intel(R) Centrino(R) Wireless-N 1030。


4、重新启动虚拟机和ubun]]></description><category></category></item><item><title><![CDATA[windows宿主机，ubuntu虚拟机下的上网设置（有线网络和无线网络）]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/77996966</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/77996966</guid><author>Firstlijinke</author><pubDate>Fri, 15 Sep 2017 23:59:05 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item><item><title><![CDATA[UBUNTU的默认root密码是多少，修改root密码]]></title><link>https://blog.youkuaiyun.com/Firstlijinke/article/details/77992027</link><guid>https://blog.youkuaiyun.com/Firstlijinke/article/details/77992027</guid><author>Firstlijinke</author><pubDate>Fri, 15 Sep 2017 15:16:28 +0800</pubDate><description><![CDATA[点击打开链接]]></description><category></category></item></channel></rss>