guangxuanliu

#include <iostream>
#include <sstream>
#include <fstream>
using namespace std;

int main()
{
    std::ofstream outfile;
    outfile.open("example.txt", std::ios_base::app); // 以追加模式打开文件

guangxuanliu

Kylin配置离线apt源

以对应的iso镜像作为apt源，步骤如下：

1. 挂载iso镜像

   # 注：iso镜像的路径必须为绝对路径
   # 挂载点必须要存在

mount -o loop /pathofiso/kylin-server-4.0.2.iso /mnt/cdrom

guangxuanliu

死锁问题调试技巧：

自动方式

1. 下载deadlock.py

https://github.com/facebook/folly/blob/main/folly/experimental/gdb/deadlock.py

2. 用gdb附加到死锁的程序

guangxuanliu

xprop _NET_WM_PID | cut -d' ' -f3

guangxuanliu

#define m 16
char buffer[m] = {0};
int index = 0;

void fillBuffer(const char *buf, int n)
{
    if(index + n <= m)
    {
        memcpy(buffer + index, buf, n);
        index += n;

guangxuanliu

#!/bin/sh
if test $# -ne 1; then
    echo "Usage: `basename $0 .sh` <process-id>" 1>&2
    exit 1
fi

if test ! -r /proc/$1; then
    echo "Process $1 not found." 1>&2
    exit 1
fi