in the command line interface, open the/etc/inittab file with VI, Note that you must use the root user or a user with root privileges to open it. 650) this.width=650; "src=" http://s5.51cto.com/wyfs02/M02/7D/50/wKioL1bmIB7BF_plAABivlpWD68021.jpg "title=" capture. JPG "alt=" Wkiol1bmib7bf_plaabivlpwd68021.jpg "/>Change the Id:5:initdefault: 5 to 3,Then press ESC,
Today, a simple pseudo-distributed cluster of Hadoop was built, with three CentOS systems on a virtual machine, but the password was forgotten. I would like to install a set of Oraclelinux, because of the time, or decided to check the method of retrieving the CentOS password. Make a record for easy access.1. All passwords have been forgotten.Press and hold ESC, enter an interface, select the second item by E, enter a space of +1, and then select the s
Tags: required oracle Security user nameIn the early days of the National Day, Oracle 11 was installed on CentOS 6.5 to test colleagues, and what was used was normal. Before the festival I take a day off, call me that the system in the machine can not log in from the command line, enter the user name password, and then jump to the login interface, had to push to
Tags: vmwareA CentOS system is installed in the virtual machine. The default entry is the graphical interface. So the default entry is the command interface how to modify it?650) this.width=650; "src=" Https://s2.51cto.com/oss/201711/09/f09d6ccb06e9c3086a0556012139abad.png "title=" 1.png " alt= "F09d6ccb06e9c3086a0556012139abad.png"/> Modify/etc/inittab File:650)
When you use Useradd to add a good user, you want to make some changes, you need to use the Usermod command.Function Description: Modify the information of the user account. syntax : usermod [-L | U][-c [-l Additional note: Usermod can be used to modify the user account settings. Parameters:-cFull path to the-d-e-f-g-g-l-L LOCKS the user password to invalidate the password.-S modifies the shell used by the user when they log in.-U modifies the user ID.-U unlocks the password.Note: Usermod do
Recently the brain hole opened, want to touch Linux. My device is Win7, so ann a VMware (12.0.0) virtual machine , in the Ann Linux (I use CentOS 6.3 64) is not very likely to engage, and according to the prompt (English @[email protected]) all the way to click Next, As a result, the installed Linux system entered the window graphical interface, has not been impossible. Search the answers of other students:1 , with the root user name, the password to
Brief introduction:Description: This module is a support visual grammar/support format color output/support json/support upload file Form/support HTTPS proxy authentication/support arbitrary request data/Support custom Header/Support Persistent session/support class wget download features HTTP command line client, Completely replace curl, often used for test/debug interfacesProject Address:Https://github.co
NAMEGroupmod-modify a group definition on the systemSynopsisgroupmod [Options] GROUPOptions:-G,--gid GID change the group ID to GID-H,--help display this help message and exit-N,--new-name new_group change the name to New_group-O,--non-unique allow to use a duplicate (Non-unique) GID-p,--password password change the password to this (encrypted)PASSWORDThe Groupmod command is used to change the definition of a group on the systemSyntax: groupmod [optio
It depends on the configuration in the inittab file. The file is located in The etc directory. # Vi/etc/find the following statement: # Defaultrunlevel. TherunlevelsusedbyRHSare: #1 ndash; Singleusermode nbs enter the graphical interface after startup or enter the command line depends on the configuration in the inittab file. The file is located in The etc dire
Cancel the CentOS graphical interface and directly enter the command line mode.It depends on the configuration in the inittab file. The file is located in the etc directory.# Vi/etc/Find the following statement:# Default runlevel. The runlevels used by RHS are:#1-Single user mode-Single-user mode#2-Multiuser, without NFS (The same as 3, if you do not havenetworki
. The runlevels used are:
# 0-halt (Don't set Initdefault to this)
# 1-single User mode
# 2-multiuser, without NFS (the same as 3, if you don't have networking)
# 3-full Multiuser mode
# 4-unused
# 5-x11
# 6-reboot (Don't set Initdefault to this)
#
Id:3:initdefault:
Change 3 of the above red Word to 5 3 for command line interface 5 for X Window graphics
In the early days of the Linux system, there was only a command-line interface, and all the work needed to be done with Linux commands.
With the development of the system, as well as the appearance of the graphical interface system, Linux also appears the graphical interface
There are various methods to beautify Linux terminal Display. here we will share a code example using the command line terminal interface of Python colorized Linux, including a simple method to execute Python programs in Linux, if you need a friend, refer to the following to see the effect:
In linux terminals, ANSI escape sequences are used to control colors.B
-delete.conf
#
# Terminal gettys are handled by/etc/init/tty. conf and/etc/init/serial. conf,
# With configuration in/etc/sysconfig/init.
#
# For information on how to write upstart event handlers, or how
# Upstart works, see init (5), init (8), and initctl (8 ).
#
# Default runlevel. The runlevels used are:
#0-halt (Do NOT set initdefault to this)
#1-Single user mode
#2-Multiuser, without NFS (The same as 3, if you do not have networking)
#3-Full multiuser mode
#4-unused
#5-X11
#6-reboot (Do NO
The Cause and solution of the character error prompt on the MySQL command line interface.
ERROR 2019 (HY000): Can't initialize character set gb2312After a long time, MySQL has been reinstalled twice. The tragedy of the No...All the system code is UTF-8.
vi /etc/sysconfig/i18n
LANG=zh_CN.UTF-8 LANGUAGE=zh_CN.UTF-8:zh_CN.GB2312:zh_CN SUPPORTED=zh_CN.UTF-8:zh_CN:z
Use of groupadd for user and group management on the command line interface
Groupadd-create a new groupThe groupadd command is used to create a new group.SyntaxGroupadd [options] groupOption:-H for help-G: create a user group with the specified GID-P: Specify the group password when creating the group-R -- system: crea
Python-colored Linux Command Line terminal interface code example sharing, pythonlinux
First look at the effect:
In linux terminals, ANSI escape sequences are used to control colors.Basic rule: Add \ 033 [to the front and end with \ 033 [0 m to the original colorEnter the following sentence in the terminal to see the green hello output.
>>echo -e '\033[0;32mhell
This article describes how to implement the HTML command line interface. If you are interested, do not miss the HTML section.
The Code is as follows:
WeChat Manager
Recently done testing tools, really lazy to engage in GUI, and then realize that Python comes with a module called CMD, with the discovery is simply a lifesaver. The CMD class in the default CMD module uses Rawinput to handle the work of prompt display and input information acquisition, but in certain cases there is a problem:When the interactive thread waits for the user to enter instructions, if you want some other background thread to be able to print the information to the foreground display
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