wget command

OpenNTPD is a Unix system daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers. How do I install OpenNTPD under CentOS / RHEL / Fedora Linux instead of default NTPD client / server?

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I own a small business website. However, bots started to abusing my forms such as contact.php. How do I stop bots bots from abusing my site? How do I tell if PHP form is submitted by a person or a script?

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How do I install wget the non-interactive network downloader under FreeBSD operating systems?

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I‘m behind a squid proxy server. How do I access internet via proxy server when I use wget, lynx and other utilities from a shell prompt on a Linux or Unix-like systems?

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I have installed OpenBSD operating system but ports collection is missing at /usr/ports directory. How do I install ports from ftp / http site under OpenBSD?

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How do I use wget ftp / http client tool to download files from password protected web page?

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How do I install Xcache opcode cacher for PHP 5 under RHEL / CentOS version 5.0 server?

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