August 18, 2017

CentOS

How To Migrate or Backup IMAP Accounts With imapsync on CentOS

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imapsync allows incremental and recursive IMAP transfers from one mailbox to another over the internet or in your local network.
As imapsync is incremental you can stop the transfer at any time and restart it later. The complete folder hierarchy will be copied recursively. Feel free to use this tool for your next IMAP migration or backup.

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How to Install Roundcube Webmail on CentOS

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With Roundcube webmail you will get a full browser-based webmail IMAP client with an application-like user interface. Roundcube webmail runs on a standard PHP/MySQL configuration and provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.

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How to Get an Alert When Your Disk Is Full on Unix, Linux and BSD Systems

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Do you want to get an alert once your disk is full on Unix, Linux or BSD Systems? In this tutorial we will show you to set up a simple cron script which sends you an email once a specific disk limit is reached.
We use the df command which reports the file system disk space usage including the amount of disk space available.

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How to Secure Apache With a Free SSL Certificate From StartSSL on CentOS

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Your own web server with an SSL certificate from an approved certificate authority so that the browser also does not cause any warning, that would be a good thing. But only the cost of a certificate from Verisign & Co let you forget those mind games quickly. The provider StartSSL does offer free SSL server certificates that are valid for one year after all. How great is that! In this tutorial we will show you the process of securing your Apache webserver with this free SSL certificate.

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How to Join Two CSV Files on Unix, Linux and BSD Systems

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Suppose you have two CSV files and want to join them to one CSV file. For this you need a tool to extract selected fields and combine them to a new file. The tool should also arrange the fields in a specific order. The command-line tool join can do exactly that. In this tutorial we will show you how to join two CSV files.

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How to Add a Second IP Address to an Existing Network Adapter on CentOS

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In this tutorial we will show you the steps to add a second IP address on an already configured NIC. This is useful for various cases. For example we use this to split the requests to a production and development website. Proxy caching is an other scenario where you can use a second IP address.

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How to Find the Owner of an IP Address on Unix, Linux and BSD Systems

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Every IP address is registered to an ISP or organisation. On Unix, Linux and BSD systems you can check the WHOIS database entry with the whois command in your command-line interface. The WHOIS record holds the name, email address, phone and many more of the IP address owner.

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How to Compress and Extract a complete Linux or UNIX Directory

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Sometimes it is useful to compress a complete directory. For example to backup the files or to send them to an other server. Transfering a compressed directory will save you some time. In this tutorial we show you how to compress and extract a complete directory on a Linux or UNIX system.

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How to Install phpMyAdmin on CentOS

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With phpMyAdmin you can easily handle your MySQL databases through a web interface. This web interface is almost as powerful as the MySQL Command-Line tool. You can execute SQL statements, create, modify and delete databases, tables, fields or rows and manage users or permissions.

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How to Install Confluence on CentOS

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We think Confluence (developed and marketed by Atlassian) is the best enterprise wiki out there. It has a plugin system and is very easy to configure. Confluence is written in Java and is mainly used in corporate environments. This instruction is to install Confluence on CentOS. We are using Confluence on CentOS 6 with 64 bit. Please change the paths when it is required.

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