CentOS [toc] check Version $ cat /etc/os-release $ cat /etc/centos-release CentOS Linux release 8.1.1911 (Core) Setup kernel check the exact version of kernel uname -a. check the kerne...

linux vi/vim [toc] Linux vi/vim 所有的 Unix Like 系统都会内建 vi 文书编辑器，其他的文书编辑器则不一定会存在。 vi 是老式的字处理器，不过功能已经很齐全了，但是还是有可以进步的地方。 vim 则可以说是程序开发者的一项很好用的工具。具有程序编辑的能力，可以主动的以字体颜色辨别语法的正确性，方便程序设计。 vim 键盘图： ...

sed (“stream editor”) parses and transforms text, using a simple, compact programming language. most notably with the substitution command. Popular alternative tools for plaintext string ma...

Linux - Sysfile [toc] /etc/passwd $ sudo cat /etc/passwd ---------------------------------------------- Username, password, uid, gid, comment, home directory, default shell -------------------...

PAM [toc] PAM = Pluggable Authentication Modules PAM Services 4 types of PAM services: Authentication service modules. Account management modules. Session management modules. Password ...

Linux Socket [toc] 1. 网络中进程之间通信 我们深谙信息交流的价值，那网络中进程之间如何通信，如我们每天打开浏览器浏览网页时，浏览器的进程怎么与web服务器通信的？当你用QQ聊天时，QQ进程怎么与服务器或你好友所在的QQ进程通信？这些都得靠socket？那什么是socket？socket的类型有哪些？还有socket的基本函数 本地的进程间通信（IPC）有很多...

cron [toc] basic Cron command for periodic processing. Periodic processing is necessary to make sure systems are functioning correctly. Cron is our scheduler. to execute anything, arbitra...

NFS [toc] Assignment under: LFCE: Advanced Network and System Administration / Configuring and Managing NFS - LFCEbyPluralsight NFS file permission UID and GID overlap: configuration file s...

NFS [toc] Assignment under: LFCE: Advanced Network and System Administration / Configuring and Managing NFS - LFCEbyPluralsight NFS file permission UID and GID overlap: configuration file s...

Install Samba in CentOS8 [toc] Assignment under: LFCE: Advanced Network and System Administration / Configuring and Managing Samba - LFCEbyPluralsight .

Install OpenLDAP Directory in CentOS 8 [toc] Assignment under: CentOS Enterprise Linux 7 User and Group Management / Implementing OpenLDAP - LFCEbyPluralsight install OpenLDAP server0: =====...

Install NTP in CentOS8 [toc] Assignment under: LFCE: Advanced Network and System Administration / Configuring and Managing NFS - LFCEbyPluralsight NTP an accurate system time on a Linux server...

Install NFS Server in CentOS 8 [toc] Assignment under: LFCE: Advanced Network and System Administration / Configuring and Managing NFS - LFCEbyPluralsight Installing and Configuring an NFS S...

Create Own RPM package in CentOS 8 build a RPM package from source. build a RPM package from code Create Own RPM package in CentOS 8 Assignment under: LFCE: Advanc...

Create Own Local or Http Repository repository 1. repository configuration 2. create own local repository base on DVD of CentOS 3. create own HT...