First, remote login method SSH is a secure channel protocol, mainly used for remote

linux grep command function grep command in Linux system is a powerful text search t

         Since I use ubuntu in both the company and my home, my colleagues are using

         The network structure under Linux is very complicated, but the basic user sp

This article describes the implementation of malloc and its malloc in the heap expans

         1. Install the RPM (Redhat Package Management) standard package through the

Two virtual network cards after installing the virtual machine: 1.bridged (bridge m

         Directory processing command: ls path /bin/ls Execute permission: all users

/***** exit1.c ******/#include<stdio.h>#include<stdlib.h>main(){ printf(&

         ls:list , list the contents of the directory Usage: ls [-aAdhl] //ls parame

/****fork_test.c ***** /# include # include # includemain () {pid_t pid; /* At this t

         Save iptables rules under ubuntu and automatically load them at boot time: S

Solution one, use pyton to handle 1.vi uzip file 2. Copy the content (Python) #!/us

         Method one, Sometimes you need to log in to ssh, you need to enter a passwo

vsftpd 530 This problem is very common. There are a lot of searches on the Internet,

         1. Users and groupsWhen logging in to Linux, you need to enter a user accoun

1. Add user Add user to use useradd command useradd [-c comment] [-d home_dir] [-e ex

         Linux resource limits can be divided into system level and kernel level: Fi

        The chkconfig command is mainly used to update (start or stop) and query the

This is the process of my configuration in the project, absolutely no problem: Somet

on Linux A traditional VPN (such as OpenVPN, PPTP) consists of a VPN server and one o

         For all organizations and companies, data is the most important to them, and

View tomat process ps -ef| Grep tomcat View java related jps Find tomcat directory fi

        Name: sort location: /usr/bin/sort Permissions: All user usage: sort [OPTION]

linux lftp connection ftp server upload & download Java code Usage: lftp ftp:

         1 Version Information System Version: Red Hat EnterpriseLinux * 2 Configura

         ubuntu configuration SSH password-free login 1. Install SSH: 2. Whether t

1 ifconfig: ifconfig eth0 192.168.1.123 netmask 255.255.255.02 setup: redhat series p

        Usually, the server has limited disk space and needs to load additional disks

First, install ubuntu and aircrack-ng First install Ubuntu, update the system to the

         1. Check the kernel commands that need to be updated: apt-cache search linu

1. Man I started with the man option because it is the most basic one in many ways. T

        1. startx switch to a graphical interface 2. shutdown -h -now immediately

There are too many commands under Linux, here to temporarily organize a part, here we

         Compile with the following error: ./configure: error: the HTTP rewrite mod

         1. In the terminal: copy command: Ctrl + Shift + C key combination paste c

ACL is an abbreviation of Access Control List. The main purpose is to provide permiss

         One of the important steps in maintaining a server is to manage the opening

under CentOS7 Step 1: Check if the JDK that comes with Linux is installed The insta

        If you want to try a desktop system other than Mac and Windows, Linux should