macOS / MS Windows 的Adobe Acrobat PDF列印標楷體異常
MacOS 下的PDF送印至FujiXerox等PostScript印表機若列印出來如下圖，只有標楷體異常，如娃娃體或破字，在MS Windows下發生也可以此方式改善。 1. 在列印時開啟印表機的進階選項(Advanced) 2. 勾選以影像方式列印(Print as image)，如下圖，就可解決文字編碼轉換成印表機語言之問題。
發表文章
CentOS 8 install tcp_wrappers to protect from tcp malicious connection
1. 2. Configurate /etc/hosts.deny and /etc/hosts.allow ALL: in.fingerd: sshd: in.tftpd: portmap: References https://pkgs.org/download/libwrap.so.0()(64bit)
Brightness blink problem on Dell Vostro laptop
1. download and install latest IGD and NVIDIA driver Intel Xe IGD https://www.intel.com/content/www/us/en/download/19344/intel-graphics-windows-dch-drivers.html Intel DSA https://www.intel.com/content/www/us/en/support/detect.html NVIDIA driver https://www.nvidia.com.tw/Download/index.aspx?lang=tw https://www.nvidia.com.tw/Download/driverResults.aspx/180692/tw
Structure of /etc/passwd file
Login name : Filtered pass : User ID : Group ID : Full name : Home path : Default Shell
YUM/yum options on CentOS/RHEL Linux
$sudo yum deplist [Package] # Display Dependencies for a package $sudo yum list avaliable # List package names from repositories $sudo yum list installed $sudo yum update # update one or all packages on your system $sudo yum update [Package] $sudo yum search [term] # Search name and description from a term $sudo yum install [Package] #Install a package from a repository to your system $sudo yum remove [Package] #erase a package [ and possible dependencies ] from a repository to your system $sudo yumdownloader [Package] #download a package from a repo to current directory references https://access.redhat.com/sites/default/files/attachments/rh_yum_cheatsheet_1214_jcs_print-1.pdf https://access.redhat.com/articles/yum-cheat-sheet
Use Linux commnad wall to broadcast message with nobanner
1. wall -n 2. enter your message to broadcast 3. Ctrl+D reference https://www.howtoforge.com/linux-wall-command/
Disable Web service on CISCO 9300 Catalyst Switch
1. ssh [cisco-ip] -l [cisco-account] # prompt > 2. enable # to enable mode 3. configure terminal 4. no ip http server no ip http secure-server references https://community.spiceworks.com/topic/136566-securing-cisco-catalyst-2960-web-interface https://www.techwalla.com/articles/how-to-use-keyboard-interactive-authentication-with-putty
MS IIS with Letsencrypt SSL/TLS on MS Windows
1. download win-acme from https://www.win-acme.com Ex. version 2.1.18 https://github.com/win-acme/win-acme/releases/download/v2.1.18/win-acme.v2.1.18.1119.x64.pluggable.zip 2. unzip win-acme.v2.1.18.1119.x64.pluggable.zip 3. execute wacs.exe with cmd.exe to run as administrator 4. Modify web.config to rewrite https with IIS rewrite module https://www.iis.net/downloads/microsoft/url-rewrite references https://www.ssl.com/how-to/redirect-http-to-https-with-windows-iis-10 https://aboutssl.org/iis-redirection-http-to-https https://ruslany.net/2009/04/10-url-rewriting-tips-and-tricks Letsencrypt ACME https://letsencrypt.org/en/docs/client-options
Command Nice increment differentitaton on CentOS Linux and BSD of MacOS
1. Linux-like -20 ~ 19 2. BSD-like -20 ~ 20
vim /vi 操作列數與游標
Ctrl+G （顯示游標在第幾列） 1. 跳到文件第一列 Command mode 編輯模式 gg Input mode 指令模式 :0 2. 跳到文件 最後 一列 Command mode G (capital G) Input mode :$ 3.游標往 左，下，上，右 h 左 j 下 k 上 l 右 4. 存檔並離開 Command mode ZZ Input mode :wq 5. Ctrl + f 到下一頁 Ctrl + p 回上一頁 6. dd 刪除整列 yy 複製整列 p 貼上複製列於游標後 7. :set number 顯示列數 :set nu :set nonumber 隱藏列數 :set nu! :set nonu References https://vim.rtorr.com/ https://bcc16.ncu.edu.tw/6/vi/vi01.html