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cat misc. cat xxx | more cat xxx | less cat > xxx , create a file xxx cat -n xxx | more with line number information. cat aaa.txt >> bbb.txt, the aaa.txt will be appened to bbb.txt tail a file with auto update when file change tail -f /var/log/sy…
1. man - an interface to the on-line reference manuals $man man 2. apt - advanced package tool SEE ALSO: apt-cache, apt-get, apt.conf, sources.list $apt-cache search mysql 3.sudo - execute a command as another user (sudo allows a permitted user to ex…
EDIT mode to GENERAL mode: press ESC general mode: CLOSE FILE :q!    :force to close the file but not save :wq! :force to save and close the file :q    : close the file but not save :wq  : save and close the file ENTER EDIT MODE i :insert a charactor…
https://www.tecmint.com/linux-network-configuration-and-troubleshooting-commands/ http://www.tldp.org/LDP/GNU-Linux-Tools-Summary/html/c8319.htm https://likegeeks.com/linux-network-commands/ netstat -r…
Linux YUM (Yellowdog Updater, Modified) Commands for Package Management In this article, we will learn how to install, update, remove, find packages, manage packages and repositories on Linux systems using YUM (Yellowdog Updater Modified) tool develo…
Cat (串联) 命令是Linux/Unix开源系统中比较常用的一个命令.我们可以通过Cat命令创建一个或多个文件,查看文件内容,串联文件并将内容输出到终端设备或新的文件当中,这篇文章我们将会以实例的方式讲解Linux中cat命令一些简便的用法. The cat (short for "concatenate") command is one of the most frequently used command in Linux/Unix like operating systems…
========== 参考格式 (新增记录时,复制粘贴在下)============= [日期]: <标题> 参考链接ref1: 参考链接ref2: 正文: ========== 参考格式 (新增记录时,复制粘贴在下)============= ========== 参考格式 (新增记录时,复制粘贴在下)============= [日期:2018年5月25日15:55] <LINUX下,网上下载的已经编译完成的可执行程序如何安装?Ubuntu 18.04> https://www…
来源:51CTO 作者:51CTO       大家都认为 Linux 默认是安全的,我大体是认可的 (这是个有争议的话题).Linux默认确实有内置的安全模型.你需要打开它并且对其进行定制,这样才能得到更安全的系统.Linux更难管理,不过相应也更灵活,有更多的配置选项. 对于系统管理员而言,让产品的系统更安全,免于骇客和黑客的攻击,一直是一项挑战.这是我们关于“如何让Linux系统更安全” 或者 “加固Linux系统“之类话题的第一篇文章.本文将介绍 25个有用的技巧和窍门 ,帮助你让Lin…
FROM: http://www.tecmint.com/13-basic-cat-command-examples-in-linux/ The cat (short for “concatenate“) command is one of the most frequently used command in Linux/Unix like operating systems. cat command allows us to create single or multiple files,…
使用Runtime.exec()运行windwos dos或linux shell命令,按实际情况具体测试     实例代码: package com.bookoo.test.command; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWr…