Virtual graphics card performance is too weak.we need to use real graphics card to improve display performance. Before starting passthough gpu card.Make sure something right first.1 your passthough card is AMD card.Because NVDIA company made a check in their video card drivers.If it found that...

Sometimes we what use harddisk in guest system passthough.So if the disk move to other machine.The data can read directly. We can check harddisk name in shell.In linux, all hardwares are in /dev directory.For hardisk,we can get disk id in /dev/disk/by-id .In the picture which with red box is...

Proxmox VE is a complete open-source platform for all-inclusive enterprise virtualization that tightly integrates KVM hypervisor and LXC containers, software-defined storage and networking functionality on a single platform, and easily manages high availability clusters and disaster recovery tools...

Sometimes when we run ls to list files.There's only black background with white words.We can't see file/dir or executable easyly. There's a file named .bashrc under user folder.Such like /root/.bashrcWe can modify this file and add a command line.alias ls='ls --color' After reboot...

Sometimes we need run some commands automatic when system boot up. We can put the command or script into /etc/rc.locallike:vi /etc/rc.localadd command line into filemount --bind /var/www/html/ /home/ftpuserThis will mount web base dir to ftp base dir automatic when system startup. And don't...

like windows has scheduled tasks.linux has crontab.it's a tool for excute tasks on time. how to install crontab?we can use yum.yum install vixie-cron crontabsthen run itservice crond startwe can add it into autostart when we open the computer.chkconfig --level 345 crond on how to use...

what is lamp? lamp is linux+apache+mysql+php.They are all open source software and free. change your centos 7 yum source to a faster source and upgrade the os.for example: 1 backup local yum source. mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak2 get a faster...

after I lock ftp user to stop them access system dir. some user get an error when they login. 500 OOPS: vsftpd: refusing to run with writable root inside chroot () because if the user is limited to his home directory,the user's home directory can no longer have write privileges.If the...

when I build this site.I need ftp to upload web files to the server space.And the upgrade of wordpress also need ftp. I found it dangerous if the ftp user can access "/" directory. I want to lock them to each ftp root dir. So that I can protect my linux system dir. There's a way. vi...

this site is used to share some technology or funs of computer. like the first program of any code language. I want to say~ Hello World! :) ...