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FAQ for the 'FreeBSD' Category

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• Update FreeBSD Using Proxy Server (csup / portsnap proxy update)
  

  Question: How do I upgrade my FreeBSD server and ports tree using our proxy server, which requires username and password based authentication?

• Exim Remove All messages From the Mail Queue
  

  Question: I’m using Exim mail server under CentOS Linux. How do I remove all messages from the Exim mail queue using a shell prompt?

• pdftotext: Linux / UNIX Convert a PDF File To Text Format
  

  Question: I’ve downloaded configuration file in a PDF format. I do not have GUI installed on remote Linux / UNIX server. How do I convert a PDF (Portable Document Format) file to a text format using command line so that I can view file over remote ssh session?

• PF Firewall Open FTP Port 21 (PASSIVE Configuration)
  

  Question: I’ve vsftpd ftp server configured under FreeBSD 7.x and PF firewall. Both PF and FTP server running on a dedicated FreeBSD web server. How do I configure PASSIVE FTP PF firewall configuration so that my vsftpd work? How do I configure PF firewall to protect an FTP server and open port 21?

• Apache: [warn] _default_ VirtualHost overlap on port 80, the first has precedence Error and Solution
  

  Question:I’m using Apache 2 to host multiple site on a single host using Apache name based VirtualHost feature. However, Apache is displaying lots of warning as follows:

  Performing sanity check on apache22 configuration:
  [Portal Oct 05 06:59:34 2008] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
  [Portal Oct 05 06:59:34 2008] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
  [Portal Oct 05 06:59:34 2008] [warn] NameVirtualHost 81.aaa.www.yyy:80 has no VirtualHosts
  Syntax OK
  Stopping apache22.
  Waiting for PIDS: 14968.
  Syntax OK
  Starting apache22.
  [Portal Oct 05 06:59:36 2008] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
  [Portal Oct 05 06:59:36 2008] [warn] _default_ VirtualHost overlap on port 80, the first has precedence
  [Portal Oct 05 06:59:36 2008] [warn] NameVirtualHost 81.aaa.www.yyy:80 has no VirtualHosts

  How do I fix this warning and host multiple websites under UNIX / Linux Apache 2 webserver?

• Bash For Loop Examples
  

  Question: How do I use bash for loop statement to repeat certain task under Linux / UNIX operating system? How do I set infinite loops using for statement? How do I use three-parameter for loop control expression?

• Disable Caps Lock Key in Linux
  

  Q. How do I deactivate caps lock key in Linux permanently?

• Linux / UNIX: Administer The Printer From a Web Browser
  

  Q. How do I administer the printer configured under Linux file and printer server from a web browser?

• PHP Send Email
  

  Q. How do I send an email using PHP and Apache webserver under Linux / UNIX operating systems? How do I send email from a PHP Script?

• FreeBSD: Nginx Virtual Hosting Configuration
  

  Q. How do I configure Nginx Web server for virtual hosting (host multiple websites under same IP address - name based virtual hosting)?

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