Linux

MacOS 全局环境变量设置方法。介绍如何通过创建一个简单的启动代理（Launch Agent）和 Shell 脚本，实现真正意义上的系统级环境变量配置。

select poll epoll实现简述

运行apt install报错You don't have enough free space in /var/cache/apt/archives/，本文记录解决方法

Linux下五种IO模型详解及实现

🤖 Explores Linux file system architecture built on Unix's "everything is a file" philosophy, covering VFS layer, popular file systems (ext2/3/4, XFS), and how files exist differently in disk vs kernel through superblocks, inodes, and file descriptors. Learn practical file descriptor usage with hands-on examples.

Linux Network Namespace

Shell的启动和功能简介 shell识别的命令形式 输入输出重定向和管道 shell变量和引用符 Shell脚本程序的建立与运行 shell的语句类别 流编辑器sed和报表生成器awk简介

Linux操作系统的简介、文件操作与权限管理