How to open the root account in Ubuntu 12.04

In Ubuntu 12.04, the default root account is disabled after Ubuntu 12.04 is installed. This is mainly to protect the system security, however, in some cases, you must use the Root account to obtain the Root permission to install the software or

Three LINUX kernel files

The three kernel files in LINUX are detailed in the network. Many servers use the Linux system. To further improve the server performance, you may need to recompile the Linux kernel based on specific hardware and requirements. To compile the Linux

Linux Command not Found Solution

Solve the Linux Command not Found problem by modifying the/etc/profile file and comment out the if statement. Comment out the following if statement:# Path manipulation if ["$ EUID" = "0"]; then pathmunge/sbin pathmunge/usr/local/sbin fi

Emacs basic commands

Emacs basic command organization C Represents the Ctrl key, and M represents the Alt key cursor control: C-v FLIP forward; www.2cto.com M-v FLIP backward, pageUp C-l the row where the cursor is located. Move the C-p cursor up. Move the C-B cursor

Modify the U disk and hostname on Archlinux

On Archlinux, I used the U disk and hostname to modify my own computer, which is a relatively old thinkpad T42 model. Of course, the configuration is also relatively low. I can only say that it meets my daily office needs and read the documents,

View link status netstat Tool

The web engineer will be familiar with the netstat command. The direct netstat is divided into two parts: the following two parts: www.2cto.com One is Active Internet connections, which is called an Active TCP connection. "Recv-Q" and "Send-Q"

Sum of a column in a linux File

A column in a linux file and a linux file are used as conditions to sum a field. The first method is www.2cto.com 01 #! /Bin/bash02 03 04 filename = sp. user05cat $ filename | awk '{print $1 "" $2 "" $3}'> log.txt 06cat log.txt | awk '{print $1 "" $2

After Ubuntu 10.04 is installed on VMware Workstation 7, the keyboard does not respond.

After Ubuntu 10.04 is installed on VMware Workstation 7, the keyboard does not respond to the solution. After Ubuntu 10.04 is installed on VMware Workstation 7, the login interface finds that the keyboard and mouse clicking are invalid. In this case,

Set environment variables in linux

When setting environment variables in linux, if you only need to use them temporarily, you can directly use the set or export command in shell to set the environment variables, if you want this environment variable to be automatically set every time

Jfreechart deploys a linux server to generate image garbled Solution

Jfreechart deploys a linux server to generate the image garbled solution. Recently, jfreechart is used in the system to create a chart function. Local testing (windwoxp environment) is normal,However, when I put it on a linux server, I found that

Use iptables to set up a secure vsftpd Server

In practice, you can use the following script to set up a secure internal FTP server. Of course, you can also use Wireshark to understand the passive and active differences between vsftpd. Take the local machine 192.168.0.10 as an example. The

Install and use Vsftpd on CentOS 5.5

File: vsftpd-2.3.2.tar.gzFirst install vsftpd:Cd/opt/softwareTar-zxvf vsftpd-2.3.2.tar.gzCd vsftpd-2.3.2Modify configuration fileVi builddefs. h/*************************************** *****# Ifndef VSF_BUILDDEFS_H# Define VSF_BUILDDEFS_H# Define

RHEL5 + bind9 simple and quick DNS server Construction

1. Environment:System: rhle5.4Server IP: 192.168.191.3Test Domain Name: www.baidu.org.tw2. Software Package (use the RPM package that comes with the installation disk ):# Rpm-ivh bind-libs-9.3.6-4.P1.el5.rpm# Rpm-ivh bind-utils-9.3.6-4.P1.el5.rpm#

Quickly create a Linux VPN Server

VPN (Virtual Private Network) is an extension of the Private Network. You can simulate a point-to-point dedicated connection through a shared Internet or public network connection to send data between a local computer and a remote computer. It has

Build a robust and secure Linux Server (ssh logon)

Nov 3 01:22:06 server sshd [11879]: Failed password for root from 123.127.5.131 port 38917 ssh2Nov 3 01:22:17 server sshd [11880]: Received disconnect from 123.127.5.131: 13: The user canceled authentication. Nov 3 03:15:08 server sshd [17524]:

Apache Virtual Host Configuration

tld

ServerAdmin webmaster@example.com-Administrator mailbox (you can write one)DocumentRoot "/home/phpok-com" -- website directoryServerName example.com -- the domain name to bindServerAlias www.example.com -- alias to be bound. Separate multiple

Copy files with progress bars in linux

Release: dedicated wait Rsync command # Rsync-av -- progress/mnt/yidong2/full20100526.tar.gz/mnt/yidong1/ You can copy objects with progress bars on the local machine, and copy objects with progress bars on different machines.   Scp command #

Use cwRsync to back up server files and databases

A website is built on a server in the school. To ensure data security, you need to back up data files to another computer, including site files and databases. I found it online. In addition to the charged FileGee, there is also a free and powerful

Solution to the problem of insufficient Ubuntu display space

Use LVPM! This software is mainly used to help Wubi users copy Ubuntu installed in Wubi to the entire hard disk partition or expand the size of Wubi allocation. In the partition where you install Wubi, he generates a new. disk file as required by

Failed to listen to or bind port 80 in Linux

I wrote a program and tried to listen on port 80. As a result, the execution of the bind failed.The program is as follows:   Sockaddr_in sock_addr;Memset (& sock_addr, 0, sizeof (sock_addr ));Sock_addr.sin_family =

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