Check file system and LVM info

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# df -hT |grep rhel
/dev/mapper/rhel-root xfs  50G  49G  1G  99%
/dev/mapper/rhel-home xfs  ...  ...  ... ...
# lsblk
# lvs -v
# vgs -v
# pvs -v

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GDM can be configured to allow remote access via XDMCP (X Display Manager Control Protocol). We can use Cygwin-X or Exceed, to connect remotely to a server and get a complete desktop GUI.

1. Edit the file /etc/gdm/custom.conf and make sure below parameters are added/set.

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% cat /etc/gdm/custom.conf
# GDM configuration storage
[daemon]
[security]
DisallowTCP=false
AllowRemoteRoot=true
[xdmcp]
Enable=true
[greeter]
[chooser]
[debug]

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1. Right click icon of the server connection and select Server admin

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Using command-line arguments

Sometimes you want an alias to deal explicitly with its arguments, rather than just leaving them at the end of the command. For example, suppose you had a file in your home directory named friends:

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Joe Schmoe     123 Main Street	212-987-6543
Jane Doe       975 First Ave	516-357-6420
Bob T. Slob    111 River Road	718-432-1098
Bill T. Pill   1 South Ave	516-877-0000

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Disable Send clipboard to views

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# vncconfig

Remove permissions of executing the command vncconfig

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# chmod go-rx /bin/vncconfig
# chmod go-rx /usr/bin/vncconfig

Install System RPMs

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# yum install perl-ExtUtils-Embed
# yum install perl-ExtUtils-CBuilder
# yum install perl-Archive-*
# yum install perl-Crypt-OpenSSL-*
# yum install openssl

Download & Install Perl Modules

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vsftpd: 533 could not create file

问题：成功启动vsftpd服务system start vsftpd.service后，FTP客户端传输文件到服务器失败，返回533 could not create file

解决：setsebool -P ftpd_full_access=true //-P (persistent) 表示reboot后设置永久有效

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dracut:/# cd /dev
dracut:/# ls

找到你的U盘驱动器名称，例如: /dev/sdd1

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dracut:/# reboot

重启后等到install页面时，按e进去启动介质编辑页面。
把：
inst.stage2=hd:LABEL=CentOS\x207\x20x86_64.check quiet
改为：
inst.stage2=hd:/dev/sdd1 quiet

最后按Ctrl+x保存重启就好了。

使用diskpart命令格式化U盘

1. 使用 Windows + X 快捷键打开Terminal (Admin)「命令提示符(管理员)」工具：

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