Linux

一、简介nc是netcat的简写，有着网络界的瑞士×××美誉。因为它短小精悍、功能实用，被设计为一个简单、可靠的网络工具。nc 常用的命令有两个：1、-v 输出详细的交互或者出错信息2、-n 如果后面是ip地址不会进行dns解析eg：nc -vn 192.168.11.11 8888二、利用nc文本传输:类似于socket一个作为服务端，一个作为客户端。服务端命令：nc -l -p 端口客户端命令： nc -vn ip port拓展：在电子取证的时候会用到。用 |

First, view system InformationThe processor architecture of the Arch Display machine (1)UNAME-M Display the processor architecture of the machine (2)Uname-r displaying the kernel version in useDMIDECODE-Q Display hardware system

Original: https://www.cnblogs.com/hooly/p/8615384.htmlCopyright: Attribution to the original author!!!View the character sets that are currently used by default in the system:# localeIn the Redhat/centos system, the recording system default language

Common command collection files find, LocatefindFind: File lookup, for filename, exact lookup, disk search, Io read and write, CPU overheadfind [options] [path ...] [Expression] [Action]B-block device files.D-Directory.C-character device

1.check Core dump;Ulimit-A[Email protected]:~$ ulimit-AcorefileSize (blocks,-c)0Data seg Size (Kbytes,-d) unlimitedscheduling priority (-e)0fileSize (blocks,-f) unlimitedpending signals (-I.)31156Max locked Memory (Kbytes,-L) -max memory Size

The grep command in a Linux system is a powerful text search tool that uses regular expressions to search for text and print matching lines . The grep full name is global Regular expression Print, which represents the globally regular expression

parted common command parametersusage:parted [OPTION] ... [DEVICE [COMMAND [PARAMETERS] ...] ...] Apply COMMANDs with PARAMETERS to DEVICE. If no COMMAND (s) is given, run ininteractive mode. Option:-H,--help show this Help-L,--

Start the VSFTP serverRun under A:cenos: Yum install vsftpdB. After logging into the Linux host, run the command: "Service vsftpd start"C. To allow FTP to start automatically every time, run the command: "Chkconfig--level vsftpd on"2. Set FTP

Reference Blog: https://www.cnblogs.com/linhaifeng/articles/6045600.html1: initial Linux commandRight-click, open Terminal, or Ctrl+alt "F1-f6" to open terminalNormal User Login After the system prompt $;root sign in after the prompt for #;Exit

Linux basic Commandsshutdown System: Init 0Exit Current User: Exitswitch Terminal: ctr+alt+f[1-6]view directories and files in the current directory: LSview directories and files under current directory (Details): ls-l (=LL)View all directories and

Modify IP Address View IP Address: ifconfig-See address Open configuration file: Vim/etc/sysconfig/network-scripts/ifcfg-eth0 input command: Service network restart Meaning of the Bootproto parameter: None (disable DHCP),

After a period of contact with Linux, from the first touch of the Deepin to my favorite kalilinux, I felt the unique charm of the operating system I did not know. I came to the university to know Linux this system, but in childhood do not know

Linux under the compression, decompression command a variety of, unlike in Windows next WinRAR fight all over the world without rival, exclusively. rar. zip format.For example, the commonly used tar tar.gz tar.bz2 under Linux. Z and so on. The CPU

#!/bin/bash#安装编译工具及库文件#软件包准备PCRE和nginxPackage_dir= "/data/app/softpackage"Install_dir= "/usr/local"pcre_version= "8.35"nginx_version= "1.12.2"#下载安装包Package_download () {Wget et http://downloads.sourceforge.net/project/pcre/pcre/$pcre

ObjectiveIn Linux, it is important to manage and update the software on the system, which can be easily managed by command line or graphical functions.1. Recognize the naming rules of RHEL softwareSoftware Management-Source code　Tar Ball

PM2 list: List All programs launched in PM2 modePM2 Monit: Shows CPU and memory usage per applicationSCP: Remote replication and local upload for local SSH login to remote serverSCP [Email

A number of Tomcat instances have been deployed on a server, namely several vertically segmented Java site services, and several Java microservices, which suddenly receive operational CPU exception alarms.Q: How to locate which service process is

Linux has 7 RunLevel, specific to 0-6 levels0: Indicates shutdown.1: Single User (no authentication required, can change root password, if grub is not set password)2, 3, 4: Indicates multi-user mode. The normal boot system, without the installation

Rights Management for Linuxthree basic permissionsR Read permission (read)W Write permission (write)X Execute permission (execute)Permission Description　　　　Format: Owner belongs to group others1th bit: File type (d directory,-normal file, L link

IntroductoryIf you have a real-world experience with Windows, you will understand how easy it is to have a file share under Windows plus a network drive map, even more simple than FTP, just like a local hard drive that can communicate with