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The Oracle export (exp) and import (imp) utilities are used to perform logical database backup and recovery, which allow you to write data into an operating system file and read it back into the Oracle database. They are...
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Secure Sockets Layer (SSL) provides secure connections by allowing two applications connecting over a network connection to authenticate the other's identity and by encrypting the data exchanged between the applications....
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Running a company as a reseller web host, you'll often receive an email from your upstream provider reporting security violations. If you do not correct the problem promptly, your upstream provider may block inbound and...
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An SSL certificate contains the information about issuer, valid dates, subject, and other cryptic information. The openssl x509 subcommand can be used to retrieve that information from an SSL certificate.
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The choice between a serial printer, parallel printer, or USB printer depends on various factors such as the specific requirements of the application, the type of data to be printed, and the available technology. Here ar...
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Mass virtual hosting using mod_vhost_alias or mod_rewrite module simplifies pattern-based virtual hosting. However, there is a major problem if your virtual host application makes use of the DOCUMENT_ROOT environment va...
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htpasswd is used to create and update the flat files used to store usernames and passwords for basic authentication of HTTP users. Resources available from the Apache HTTP server can be restricted to just the users liste...
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FreeVPS is a software package used to set up Virtual Private Servers (VPS) on Linux systems. A VPS is a virtualized server that acts as a dedicated server within a larger physical server. This guide explains how to insta...
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When Outlook or Outlook Express announces new mail audibly, they look for and play the New Mail Notification Windows system sound. To change the way new mail is announced, you have to customize this system sound.
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I spent a whole day trying to figure out a Struts validator problem. It's a web application containing three modules, but only one module does not perform Struts validation. The XML config files are perfectly fine, but n...
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