Cloud Applications

Simple operations on linux users and user groups, and file permissions can be created only with root permissions. new linux users adduserab can be created with the name AB. new users do not have a password, note that users without passwords cannot

Soft RAID-mdadm toss note RAID-disk array, in short, used to improve hard disk utilization and speed RAID type (theory): RAID0: read/write performance (at least two hard disks) --- hard disk usage is the sum of all hard disks, and performance is the

The vim split window command displays two different files, or two different parts of a file, or two files are compared side by side. All of this can be achieved through split windows. | 08.1 | split window | 08.2 | split window with another file | 08

Use Xmanager to remotely connect to CentOS6.3 1. Use Xmanager to remotely connect to CentOS6.3 Step 1: In Linux, modify the/etc/X11/xdm/Xaccess file and find the following statement: # * # anyhostcangetaloginwindow remove the prefix... use Xmanager

Force uninstall LINUX built-in JDK [root @ localhostsoft] # java-versionjavaversion1.4.2 & amp; Prime; gij (GNUlibgcj) version4.1.220071124 (RedHat4.1.2-42) [root @ localhostsoft] # rpm-qa | gr... forcibly uninstall the built-in JDK [root @

Ubuntu12.04 how to modify the left of the launcher icon size in the unbunt-2d desktop tossing a long time there is no way to modify the left of the icon size. because of the computer speed, there has been no use of 3d desktop. I finished it today

Use VI to edit the binary file 1. open the file in binary mode # vi-bfile. for example, the file content is originally helloworld! 2. switch to Binary Display. in vi command mode, enter: %! Xxd000000: 68656c6c6f20776f0000c6420210a... use VI to edit

SHELL Command learning Notes 1. mkdir Command 1. purpose: create a directory 2. parameters: (1).-p: if some directories in the path do not exist, the directory is automatically created, the default mode is determined by the umask in the execution

Simple tips and commands for linux beginners (3) ctrl + c terminate the current process (entering the writing command status) ctrl + k delete the content from the cursor to the beginning of the line ctrl + u delete the content from the cursor to the

In shell, we know that variables are inherited by the quilt process and can be directly used. In some cases, you may need to inherit functions to facilitate transparent use. the method is very simple. use export-f. pay attention to the parameter-f,

The repair technology of Linux file system damage sometimes faces such an error when maintaining the Linux server, that is, the display file system becomes (ReadOnlySystem), that is, the file system becomes read-only, there may be two reasons for

In Linux, configure and activate the network command line code # The ifconfigeth0192.168.1.100netmask00000000255.0up method will expire after restart. You can run the following command to set the command line code # After setup is complete, you need

Linux User and Group management commands details Linux system manages user and Group configuration and management commands in Group mode mainly include: user management commands useradd New user usermod modify user userdel delete user newusers new

Ubuntu12.04 use the note sudoapt-getupdatesudoapt-getinstallxxxx to call up the terminal: 1, ctrl + alt + t. 2, dash search: gnome-terminal3, user file system directory ctrl + f search: gnome-terminal display desktop shortcut: win + ctrl + d cut...

Linuxshellsubstr (split string) is originally implemented by calling substr in awk if the string is to be intercepted in shell. Today I learned a new method, which is supported by shell itself. For example, there is a string of 12345678 & amp; Prime;

Ubuntu10.10 and windows dual-system startup sequence modification I think most of the children's shoes when installing ubuntu, windows on the hard disk will be retained, you can choose when starting the computer, if you want to enter windows, go to

LCD display signal out of range solution Linux system: Linux system prompts that the reason for the input signal out of the range is not only because of the refresh frequency, but also because of the desktop system configuration. Solution: restart

Imitating the GNU quota script 01 #! /Bin/sh0203flags & quot; 04 realquota & quot;/usr/bin/quota & quot; 0506 while [$ #-gt0] 07do08case $ reset in10 -- help) echo & quot; Usage: $0 [-- group -- verbos imitates GNU-style quota script 01 #! /Bin/sh02

ApacheSubversion (SVN for short) is an open-source version control system installed on the SVN server in Ubuntu. it uses a branch management system as opposed to the cross-section (RCS) and CVS, it is designed to replace CVS. More and more control

Ubuntu sets up a gateway service to share the network. Today, the long-awaited six blade machines have finally arrived. after being configured by a person from Supermicro, I found that no other node except the master node can access the Internet,