xargs命令小结

Hello everyone, Glad to see you all there again. Tonight I'd like to share with you a book I read recently named《The Road Less Traveled》.

Sure, I'm reading the Chinese version, but I'm introducing it to you in English tonight.

First, let's have a look at the book. This is the cover of the book. And this is Chinese version.

The author of this book is Scott Peck. He is a psychiatrist in the United States. We can also say he is a doctor.

You may be wondering why I like this book ?

Well, when I was small, I worried about friendship and academic performance.

When I saw senior students, they were so beautiful,  I hoped one day I could become one of them, have a good body shape, and enjoy their right and freedom.

However, when I was senior, I didn't want it anymore. Because I found I must face cruel examination, struggle with heavy textbooks, and fight to enter university. I feel exhausted.

When I came of age, there are so many things I need to worry about: career, love, friendship, and of course the money.

So what's life? What's love? How should I do in my life? Why do I feel so painful?

I keep asking me why there are so many problems in my life again and again until I meet this book "The Road Less Traveled".

After reading this book, I begin to realize: life is difficult and it is the same with everyone, not just me.

Scott Peck told us: Life is difficult. This is a great truth, one of the greatest truths.  It is a great truth because once we truly see this truth, we transcend it.  Once we truly know that life is difficult – once we truly understand and accept it – then life is no longer difficult.  Because once it is accepted, the fact that life is difficult no longer matters.

So what should we do to live a better and happier life ?

Scott Peck show us a path to the road which leads to spiritual growth and happy life but is less traveled.

So let's get started. A great journey is about to begin.

In Peck’s opinion, Self-Discipline is the essential element of our spiritual and psychological health.

He says: ‘Without discipline we can solve nothing. With only some discipline we can solve only some problems. With total discipline we can solve all problems.’

And it consists of four components, each of which deserves a separate attention.

So, the problem will not fix itself, we should take responsibility for it.

And at last , I want to say it is not 心灵鸡汤,this is an amazing book I just cannot put it down.  I am glad you enjoyed the book and have a better and happier life. Thank YOU.

### Linux 运维常用命令汇总 以下是常见的 Linux 运维命令及其功能说明: #### 服务管理 - 使用 `service` 命令可以轻松启动、停止或重启某些服务,例如 Apache 或 MySQL。 ```bash service httpd start # 启动 Apache 服务 service mysql restart # 重启 MySQL 服务 ``` 此外,也可以通过 `systemctl` 来实现相同的功能[^1]。 #### 资源监控 - **内存使用情况**:可以通过多种方式查看系统的内存状态。 ```bash free -m # 显示内存和交换区的使用量(单位 MB) grep MemTotal /proc/meminfo # 获取总内存大小 grep MemFree /proc/meminfo # 获取当前剩余内存 ``` - **磁盘空间检查**: ```bash df -h # 列出所有分区的空间占用情况(人类可读格式) du -sh /path/to/dir # 统计某个目录的总体积 ``` - **系统负载与运行时间**: ```bash uptime # 展示服务器已运行的时间以及平均负载 cat /proc/loadavg # 查阅最近一段时间内的 CPU 平均负载 ``` #### 日志分析 对于日志文件处理,通常会结合多个工具完成复杂的数据提取和统计工作。下面是一个例子,用于找出某日志文件中访问频率最高的前十个时间段[^3]: ```bash cat fe.log.20230628-1 | awk -F ',' '{print $1 > "message_time.txt"}' cat message_time.txt | xargs -n1 | sort | uniq -c | sort -rn -k1 | awk '{print $2, $1}' | head -n 10 | tail -n +1 ``` 以上脚本实现了按行解析原始日志数据并最终筛选高频次记录的操作流程。 --- ### 小结 这些只是众多可用指令的一部分,在实际工作中可能还需要掌握更多高级技巧来满足特定需求。熟悉它们有助于提高工作效率并更好地维护基于Linux平台的应用环境。
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