• download DVD version: https://www.centos.org/download/

• read this install guide first: http://www.2daygeek.com/centos-7-desktop-installation-steps-with-screenshots/
  • note: the default option is install server edition without GUI, make sure in “Installation Panel”
    • double check the installation summary > software selection, and choose the last one with GU

• during installer summary, if you want to format existing disk,
  • in “Installation Summary” page, under “System” icon, click “Installation Destination”,
    1. select the disk
    2. under other storage option, select “Auto configure partitioning” and check “I would like to make additional space available”, then click “Done” on top left corner
    3. in pop-up partition table, select the partition or disk and click “Delete” button to mark as to delete, then click right bottom corner “Reclaim Space” button
  • then you got a clean disk to install, uncheck “I would like to make additional space available” and continue install

• while installing, set the pass for ROOT user, and set the pass and name for yourself

• screen shot
  

• guest_addition_and_share_folder_working_guide_of_centos7_vm_on_win7

fix internet connection for virtualbox install(outdate)

• check network connection status and find the Ethernet type status with the connection name

  nmcli d

• edit the config for that connection

  sudo vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
   
  # add following
  DNS1=8.8.8.8
  DNS2=8.8.4.4
  ONBOOT=yes  

• additional note

  BOOTPROTO=dhcp # for auto ip get

• reset the network by reboot or restart network

  service network restart

fix mouse integration in VirtualBox install (outdate)

1. make sure EPEL repo already installed
2. install folowing

   sudo yum install dkms
   sudo yum groupinstall "Development Tools"
   sudo yum install kernel-devel

3. restart computer, then install guess tool as usual

• Problem:
  • “Loaded plugins: fastestmirror, langpacks http://linux.dropbox.com/fedora/7/repodata/repomd.xml:” and then can't find anything when ask install something.
• Solution:

  cd /etc/yum.repos.d/
  sudo rm dropbox.repo

• on the top right corner drop down menu, Wifi setting panel
  • try click on “Connect to Hidden Network”, type the Wifi name, security type (most likely wpa2 personal), and pass
  • if not connected after a while, try install wifi

    yum install NetworkManager-wifi

  • restart, try above again, even though it not show the list, it should still be able to connect.

• desktop environment option and install guide: http://unix.stackexchange.com/questions/181503/how-to-install-desktop-environments-on-centos-7
  • install cmd

    # gnome: the desktop with (Start menu,Application, Place on top, and taskbar, space on bottom)
    yum -y groups install "GNOME Desktop"
    startx
     
    # -- use gnome shell mode instead centos default gnome classic mode
    echo "exec gnome-session" >> ~/.xinitrc
    startx
    # -- or in set login and choose from list
    systemctl set-default graphical.target
     
    # KDE: windows like bottom (start menu, taskbar, space)
    yum -y groups install "KDE Plasma Workspaces" 
    echo "exec startkde" >> ~/.xinitrc
    startx
     
    # cinnamon: more like windows 7
    # Add the EPEL Repository by fedora, set [priority=5] or optionally change to [enabled=0]
    yum -y install epel-release
    sed -i -e "s/\]$/\]\npriority=5/g" /etc/yum.repos.d/epel.repo
    sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
    yum --enablerepo=epel install [Package] # if [enabled=0], input a command to use the repository
    # install
    yum --enablerepo=epel -y install cinnamon*
    echo "exec /usr/bin/cinnamon-session" >> ~/.xinitrc
    startx
     
    # MATE: basically GNOME 2, looks like windows XP on skin with (Application, Place, System) on top, like old fedora
    yum --enablerepo=epel -y groups install "MATE Desktop"
    echo "exec /usr/bin/mate-session" >> ~/.xinitrc 
    startx
     
    # xfce: looks like above but low quality like
    yum --enablerepo=epel -y groups install "Xfce" 
    echo "exec /usr/bin/xfce4-session" >> ~/.xinitrc 
    startx

1. get fedora repo with ask yes

   sudo yum install epel-release

2. get all user install MATE

   sudo yum groupinstall "MATE Desktop"

3. restart and login button gear icon will give the choice list now
   
4. if you want uninstall

   sudo yum groupremove "MATE Desktop"

• control panel > Window > Behavior, change alt key to super key
  

• Settings » keyboard » click “+” at the bottom
  • example:
    • name as terminal, command as
      • for gnome 3 desktop

        gnome-terminal

      • for mate desktop

        mate-terminal

    • shortcut as Ctrl+F2

sudo yum install libGLU

Firefox Update

• cmd

  sudo yum update firefox

Dukto - lan transfer tool

• go download: https://software.opensuse.org/download.html?project=home:colomboem&package=dukto
  • on the page, choose the your linux distribution type, then choose grab binary, for centos, grab the x86_64 rpm installer.

filezilla

• make sure epel repo installed

  sudo yum -y install epel-release

• install filezilla

  sudo yum -y install filezilla

CMake

1. download source code: https://cmake.org/download/
2. unpack and cd to the folder and command (ref: link)

   ./bootstrap
   gmake
   sudo gmake install
   cmake --version

PySide and PySide2

1. (For CentOS 7) if you not add this repo yet, than add it

   rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

2. get pip installed

   sudo yum upgrade python-setuptools
   sudo yum install python-pip python-wheel
   sudo python -m pip install pyside2

gvim - GUI vim

• install

  sudo yum install vim-X11 -y

atom editor

• install git

  sudo yum install wget git -y

• download rpm atom installer, https://atom.io/
• if you got nss lib (Network Security Services) version error “NSS_VersionCheck”, try install nss library

  sudo yum install nss

unrar

1. (For centos 7) use these cmd to install it

   ## 64 bit linux ##
   wget https://www.rarlab.com/rar/rarlinux-x64-5.5.0.tar.gz
   tar -zxvf rarlinux-x64-5.5.0.tar.gz
   cd rar
   sudo cp -v rar unrar /usr/local/bin/
   cd ..
   rm -r rar

7z

• method A: yum way

  yum install p7zip

• method B: manual way:
  1. make sure you have the dev tool already, skip if you have

     yum install gcc gcc-c++ bzip2

  2. compile and install 7z

     curl -L https://sourceforge.net/projects/p7zip/files/latest/download?source=files -o 7zip.tar.bz2
     tar xjvf 7zip.tar.bz2 ; rm -f 7zip.tar.bz2 ; cd $(ls -1t | grep p7zip_ | head -1)
     cp makefile.linux_amd64 makefile.linux
     make -j $(grep processor /proc/cpuinfo | wc -l) all_test
     sudo ./install.sh
     cd ..

  3. remove the download source file and package if you want

Apache web server

1. install

   sudo yum install httpd mod_ssl

2. start server

   sudo /usr/sbin/apachectl start

3. add firewall to allow port 80

   sudo iptables -I INPUT -p tcp --dport 80 -j ACCEPT

4. enable /var/www folder writting

• https://www.tecmint.com/things-to-do-after-minimal-rhel-centos-7-installation/

• Problem: yum lock when trying install
  • solution: turn off auto update on startup