Linux

A service or software used on a regular basis in Linux to perform command or program tasks in order to meet the requirements for periodic execution of tasks.The Crond service is a running program, and the crontab command is used to set the timing

The previous article organized several basic common uses of cat instructions, this time finishing the basic usage of the Paste directive. Cat Paste Cut Grep PastePaste can be simply understood to combine the contents of two

VI EditorIntroduction to VI Editor:VI Editor is one of the most popular editors in Unix and Linux worlds;VI Editor features are short and concise, powerful;VI has a unique mode of operation, but for beginners to have a certain difficulty in getting

SMALL Small is Beauty1THING make every program only good advice thingsPROTO Build prototypes ASAPPORT Loft for high efficiency and portabilityFLAT using plain text files to store dataReuse leveraging the software to the full leverage effectScript

[CP]CP copy files to target directory-R copy subdirectories-------------------------------------------------------------------------------------------[MV]MV Move the file, move to the original file, rename it, or enter a new file name at path.-

1. Environment variable configuration file /etc/profile.d/*.sh /etc/profile /etc/bashrc ~/.bash_profile ~/.bashrc The environment variables of the system are mainly controlled by the above-mentioned script files, of which the

. tarUnpacking: Tar xvf Filename.tarPackage: Tar cvf filename.tar DirName(Note: Tar is packaged, not compressed!) ）———————————————. gzDecompression 1:gunzip filename.gzDecompression 2:gzip-d filename.gzCompression: gzip FileName. tar.gz and.

Example:The steps to open port 10000 are as follows:1, modify the/etc/sysconfig/iptables file, add the following line:-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 10000-j ACCEPTRestart IptablesService Iptables Restart　2, restart the

1. How to useThe TR command can replace, compress, and delete characters from standard input. -C or--complerment: Supersedes all characters that are not part of the first character set;-D or--delete: Deletes all characters belonging to the first

1) PS A shows all the programs under the current terminal, including other users ' programs.2) ps-a Show All Programs.3) PS C lists the program, displays the actual instruction name of each program, and does not include the path, parameter or the

1. Swap partition     linux memory usage mechanism:/proc/sys/vm/swapiness    2. View memory space usage status      cat /proc/meminfo    free         -m  display results in MB         -g  display results in gigabytes          3.dd  Specify the size

1. Tree-Shaped directory structure2. Top level: root directory/bin binary Executable command/dev Device Special files/etc system administration and configuration files/ETC/RC.D startup configuration files and scriptsThe base point of the/home user

1. Linux shutdown2. System directory Structure3. Linux Telnet 4. Basic properties of Linux files5. linux File and directory management6. Linux User and User group management7. Linux Disk Management8. Linux Vi/vim9. Linux Yum Command1. Linux

Namespaces namespacesProgramming languagesEncapsulation → code isolationOperating systemIsolation of system resourcesProcesses, networks, file systemsProcess isolation pid:process IDNetwork interface Management Net:networkAccess ipc:interprocess

Tell us what happened.Background: There are multiple users under Linux who have their own passwords and root users.Subject: I use zhengdengping user login want to go to copy Point user Lixianchu directory of Things1. First found that there is no

Guide The servers we manage may be running out of disk space as the volume of business grows, such as: the lack of hard disk space for shared file servers, when we need to increase disk space to meet online business, or when we are using Linux,

Under the Linux system, reboot Tomcat to operate with commands!First, go to the bin directory under TomcatCd/usr/local/tomcat/binUsing the Tomcat Close command./shutdown.shTo see if Tomcat is shutting downPs-ef|grep JavaIf the following similar

Ext.: Http://www.tuicool.com/articles/R7fQNfQ0x00 Delete default directoryWhen you are finished installing Tomcat, delete all directory files that are default $CATALINA _home/webapps#!bashRm-rf/srv/apache-tomcat/webapps/*0x01 User ManagementIf you

Vim configuration in CentOS 6.5, centosvim 1. log on to and enter your common user name to view its home directory. Command: # Su xxx $ Cd xxx $ Ls- 2. View and create directories and files First look at your home directory ~ /Whether the. vimrc

The Virtual Network Model in linux and the isolation model created using qemu-kvm, linuxqemu-kvm The first isolation model:   Both Guest1 and Guest2 are virtual machines. First, you need to know that the virtual machine's network adapter in linux