yarnom
f0b50d13ea
Add Go/Postgres admin APIs, Angular admin UI, manual build flow, asset uploads, markdown import/export, configurable slug generation, and the Yar reading theme. Exclude local docs and generated development artifacts from version control.
46 lines
1.8 KiB
Markdown
46 lines
1.8 KiB
Markdown
---
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id: 0e4f5039-4c89-4465-a8bb-116ac188dd1b
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slug: linux-process-learning-1
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title: Linux 进程学习 一
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summary: ""
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status: published
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tags: []
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cover: ""
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version: 1
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slug_source: manual
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slug_locked: true
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published_at: "2022-10-16T15:54:11+08:00"
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created_at: "2022-10-16T15:54:11+08:00"
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updated_at: "2026-01-07T18:10:40+08:00"
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---
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## 什么是进程？
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在了解进程的时候，首先得知道什么是程序。
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操作系统其实学过，程序被执行时，操作系统将可执行文件复制到内存中，这就是程序，而进程则是程序的实例，是系统资源分配的基本单位，它被唯一标识于 PCB 之中，也就是进程控制块。
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## ps 命令 查看进程
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>Note that ps -aux is distinct from ps aux. The POSIX and UNIX standards require that ps -aux print all processes owned by a user named x, as well as printing all processes that would be selected by the -a option. If the user named x does not exist, this ps may
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interpret the command as ps aux instead and print a warning. This behavior is intended to aid in transitioning old scripts and habits. It is fragile, subject to change, and thus should not be relied upon.
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>To see every process on the system using BSD syntax:
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ps ax
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ps axu
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也就是说，我们可以通过 **ps axu** 来查看系统中的进程
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## top 命令 查看进程
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> The top program provides a dynamic real-time view of a running system.
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这个命令显示的进程状态是动态更新的。
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以下是常用命令：
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- q：退出top命令
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- <Space>：立即刷新
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- s：设置刷新时间间隔
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- t：显示或隐藏进程和CPU状态信息
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- m：显示或隐藏内存状态信息
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- P：按%CPU使用率排行
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- M：按%MEM排行
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- u：指定显示用户进程
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- k：kill进程
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- i：只显示正在运行的进程
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- h：帮助命令。
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