When centos 7 is started, the following message is displayed: "initial setup of centos linux 7 (core )"
After the CentOS7 system is updated, restart the system and report an error (initial setup of centos linux 7 (core ))
Solution:
Enter "1" and press Enter.
Enter "2" and press Enter.
Enter "q" (exit) and press Enter to confirm
Enter "yes" (OK) and pres
Installation and multi-user configuration of centos, multiple users of centos
The operating system of the environment is CentOS 6.
1. Enter the terminal
2. Run yum-y install python-setuptools to install the python package management tool.
3. Run yum-y easy_install pip to install the python package management tool.
Create a Shadowsocks configuration file, which ca
Change CentOS user password, centos Change User Password
CentOS User Password Change
1. Common users
① Obtain the root permission of a Super User
Command: su, su-, or su-root
② Enter the command: passwd User Name
③ Enter the new password
2. superuser
① Open the system-auth file
Command: vim/etc/pam. d/system-auth
② Modify one line (set the minimum pas
How does CentOS modify the time zone and time ?, Centos Change Time ZoneModify the time zone:
The CentOS time zone is configured in/etc/localtime. The simplest way to modify it is to make a link to the time zone you want to configure (the available time zone list is in/usr/share/zoneinfo)
Ln-sf/usr/share/zoneinfo/Asia/Shanghai/etc/localtime
You can also direct
Tags: share images in HTTP file roc target OSS systemctl 51cto imagesCentOS 6 Change the boot level of the system is simple, directly modify the file: /etc/inittab , the last line in the file to modify.
Path to the CentOS 7 system-level modification:/etc/systemd/system/default.targetThe file is a soft link that modifies the process such as:查看当前运行在哪个级别上执行: `systemctl get-default`
view the corresponding relationships (soft connections) for the ru
Because it is Centos6.3 and win7 dual systems, the MBR is changed after win7 is reinstalled. The originally installed Centos is also guided in MBR, so it cannot enter Centos, therefore, use the Centos USB flash drive to enter the rescue mode. First, use df-h to find the disk number corresponding to each disk and then find the partition where the boot is located.
CentOS sets the network (modify IP address modify gateway modify DNS), and centos network modifies ip Address
CentOS IP address Modification
# Ifconfig eth0 192.168.1.80
In this way, the IP address is changed192.168.1.80(If you find that the network is no longer available, you may need to change the gateway and DNS as mentioned later), but after you restart the
Install MySQL in CentOS and MySQL in CentOS
First, install the mysql server online through the network link! (Note: When I log on to the server, I use another user instead of a super administrator. Therefore, when installing MySQL, I need to switch to the super administrator to install the software correctly. The command is: su root, and then enter your super administrator password to log on to the super ad
we have installed the CentOS system in front, but because it is minimized, the system is not networked and there are no other basic software that can be managed remotely. Here we need to set up the network of the system, and then through the Xshell remote management system, finally by modifying the Yum source, local installation of some necessary software.First, network settings1, login into the system, input ifconfig can see only lo network, now is n
It's really a big difference to get CentOS from the installation of Ubuntu 12.04.most of the language, concepts are similar, but there are some differences in the instructions, and Ubuntu has a different place to come out to say otherwiseto make the VSFTPD and MySQL communication must have a value, MySQL plug-ins must be installedin Ubuntu 12.04 need Libpam-ldapCentOS 6.3 requires Pam_mysqlvsftpd master configuration Files/etc/pam.d/vsftpdcrypt=0: Pla
What should I do if the system crashes and no optical drive is available. The simplest way to think of it is to re-install the CentOS Mount disc mount-oloopcentos.iso/mnt/copy the boot file cp/mnt/isolinux/boot/-a in cenots with the iso disc file to add grub. conf content: titlecentos_setupr
What should I do if the system crashes and no optical drive is available. The simplest method is to re-install CentOS
Centos large file cutting and merging, centos cutting and merging
Many companies now place projects on ECS. When I want to put down the code and generated file "sz file name" in the ECS, I find it too large. ECS does not support downloading large files. In this case, you need to use the split command to cut the file, then go down, merge it locally or upload it to the desired server, and then merge it.
The
From CentOSRHEL7, the foreseeable naming rules have changed to default. In this rule, the interface name is automatically determined based on the firmware, topology, and location information. Now, even if you add or remove a network device, the interface name remains fixed without reenumeration, and can be replaced seamlessly with the broken hardware.
Change the NIC name to eth0. The CentOS operating system is used as an example.
1. Modify the grub S
Delete a file or folder with a suffix named. lck under the virtual machine system directoryThis lck file is a disk lock file for a virtual machine, and we know that the virtual machine's disk is co-existing with the host's disk, only because of the specific virtual mechanism that makes the two separate. When using a virtual machine, VMware generates several disk lock files to protect the disks that are currently occupied by the virtual machines from being modified by the host or other virtual ma
Press the "E" key on the keyboard when booting up to enter the following interface.
Select the appropriate kernel, press "E" again, select the second item, press the "E" key again
After the second step, this screen can be edited, at the end of the message with a "space", and then type "single" (), or directly enter the number of "1" and entered to determine the next step. The figure is as follows:
After the third step, will appear, is not feeling back to the second step ? No, here's the "B
Install the Chinese Language pack:Yum Groupinstall Chinese-supportModify the character encoding configuration and create it without this file:vim/etc/sysconfig/i18nThe following changes are included:Lang= "ZH_CN. Gb18030″Supported= "ZH_CN. Utf-8:zh_cn:zh:en_us. Utf-8:en_us:en "Sysfont= "Latarcyrheb-sun16″The i18n file is used to set the system language, such as: ZH_CN. UTF-8, ZH_CN. GB18030, ZH_TW. Big5, en_US. UTF-8 and so on.Three environment variables in i18n:Lang variable, set the system lan
/gitosis-admin.git or # git clone SSH: // [email protected]: 8200/gitosis-admin.git # modify the configuration file, you can omit each input port Vim ~ /. Ssh/config # modify the client ~ /. In the ssh/config file, add the following code: Host www. domain. comhostname www. domain. comport 8200 # after modification, the client can be connected in the following way # git clone SSH: // [email protected]/gitosis-admin.git # upload the public key to the server (modify the port, and specify the port i
To develop j2ee on Linux, you must first build a j2ee development environment, including jdk, tomcat, and eclipse installation (this article has explained in detail CentOS (7) of Linux learning-building a j2ee environment under CentOS ), if you want to develop a web project, you can install a myeclipse program on the Linux system. The installation method is the same as that for installing eclipse, with jdk,
Install and configure the Mysql database under centos, import the database, authorize a remote ip address, and centos Mysql
Uninstall the original mysql
Because mysql databases are too popular on Linux, the mainstream Linux system versions currently downloaded are basically integrated with mysql databases, run the following command to check whether the mysql database has been installed on the operating syst
OS + CentOS 7/centos 7/VirtualBox/VirtualBox-5.1-5.1.28_117968_el7-1.x86_64.rpm, centosvirtualbox
S
VirtualBox: resolves the problem of libSDL-1.2.so.0 () Errors During VirtualBox installation.
Http://www.sklinux.com/983
When you install VirtualBox for Centos6.2, you encounter the following error:Error: Failed dependencies:LibSDL-1.2.so.0 () (64bit) is needed by VirtualBox-4.2-4.2.4_81684_el6-1.x86_64The or
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