Linux

Here are some basic introductions are not introduced, or to introduce the relevant commandsThese are the important commands in this section:chgrp Chown chmod1. Change file attributes and permissionsCHGRP----Changing the user group to which the file

Directory LS: List directory CD: Switch directory (cd ~ means back to the directory that is the root directory, CD. Indicates up-level) PWD: Displays the current directory mkdir: Create a new directory RmDir: Delete an empty

Summary of optimization:1, without root management, in the name of ordinary users through sudo authorization management.2, change the default remote connection SSH service port, prohibit the root user to connect remotely, evenTo change only listen

Linux installs Tomcat after the local can be accessed normally, but then Tomcat can not be accessed outside the Linux default wall to open the 8080 port open/etc/sysconfig/iptables [[email protected] ~]# Vi/etc/sysconfig/iptables in-a

The personal FTP profile, which is commonly used, is saved only.#关闭匿名用户Anonymous_enable=no#允许本地用户有写入权限 (0755)Local_enable=yesWrite_enable=yeslocal_umask=022Xferlog_enable=yesDirmessage_enable=yes#关闭DNS反向解析Reverse_lookup_enable=no#有nat不能使用, need to

Linux Optimizations:1, the establishment of ordinary accounts, the use of ordinary users landing.2, to deal with SELinux.3, the processing firewall.4. Streamline start-up service. Keep Sshd,network,crond,rsyslog,sysstat.5, the Linux minimum security

After the installation of Ubuntu, into the system, presented in front of the Ubuntu interface, and Windows is not much worse. The general operating system contains the GUI and CLI. GUI is what we see now, is also commonly used by Windows directly

When we use a U disk to make (I use REDHAT7.0 and SENTOS7.0) PE disk to the computer installed Linux system, often choose to install the text interface until three "OK" will be stuck after a long time, waiting for a long time will appear similar

1, the server can ping through2, the server catch the local HTTP request packet, you can catch3, local catch the HTTP response packet returned by the server, cannot catchAfter the discovery, it is because the Linux firewall is turned onView firewall

Hello everyone!My name is Li Shan, from Hunan Xinhua. You may think I'm a girl when I hear that name. Please do not be deceived by my name, in fact, I am a man. Today I made up my mind to report an old boy. Linux operations classes.I've actually

Step one. Install the DHCP component yum install dhcp*-y Step two. Configure the dhcp.conf file Vi/etc/dhcp/dhcpd.confddns-update-style interim; #配置使用DHCP-dns Dynamic update mode ignore client-updates; #忽略客户端更新subnet 172.25.0.0 netmask 255.255.192.0

Many people are very familiar with the ipconfig command-line tool under Windows, which is used to obtain and modify network interface configuration information. The Linux system has a similar tool, the ifconfig (Interfaces config). You typically

1: Command Introduction:Touch is used to create files or to modify the timestamp of files and directories, including access time and change time.2: Command format:touch [Options] File3: Command parameters:-A or--time=atime or--time=access

The KILL command is used to "kill" the process that specifies the process PID. Terminate a foreground process you can use CTRL + C and terminate a background process with the KILL command. The KILL command ends the process by sending a specified

I. ConceptMessage Queuing provides a way to send a block of data from one process to another. Each block of data is considered to have a type, and the receiver process receives a data block that can have different type values. We can avoid the

View Current disk partition statusFdisk-lDisk partitioningFdisk/dev/sdbCreate PVPvcreate/dev/sdb1Pvcreate/dev/sdb2Confirm PVPvdisplayPvdisplay/dev/sdb1Pvdisplay/dev/sdb2Create VGVgcreate MYVG/DEV/SDB1/DEV/SDB2OrVgcreate myvg/dev/sdb1; Vgextend

PWD prints out the current working directorysudo su get administrator privilegesGedit hello.c Open hello.c fileApt-get Install installation/update a softwareLS lists the files in the current directoryLs-l displaying details of files and

Linux (3)-basic structure of the file system and basic structure of linux The Linux File System is a single inverted tree structure with the file name strictly case sensitive (windows systems are case insensitive ). The path is separated by "/",

Linux-Basic command line operations, linux-basic operations After installing Ubuntu, go to the system and display the Ubuntu interface, which is not much different from windows. Generally, the operating system includes the GUI and CLI. GUI is what

LAMP environment Deployment Guide 1. install apache 1) install httpd: Yum install httpd 2) Start the httpd service Service httpd start 2. Install mysql 1) install mysql Yum install mysql-server 2) Modify mysql encoding to utf8 Vi/etc/my. cnf Add the