How To Install and Configure Squid as Transparent Proxy Server under Linux and FreeBSD
Squid is a proxy server and web cache daemon. It has a wide variety of uses: caching web, filtering traffic, caching DNS and other computer network lookups for a group of people sharing network resources.
Squid is primarily designed to run on Unix-like systems but it also runs on Windows-based systems. In this tutorial I'll show you how to install and configure squid proxy server to run under Linux and FreeBSD.
A proxy server software is based on the TCP/IP protocol. It monitors a special port such as 3128 or 8080. A computer who runs a proxy server software is called a proxy server. If other computer want to connect to Internet through the proxy server, it should know the proxy server's IP address and proxy port.
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How To Install and Integrate eAccelerator into PHP5
eAccelerator is an open source PHP accelerator, optimizer, and dynamic content cache which provides a bytecode cache. eAccelerator increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times.
1. Install prerequisites
There is no eAccelerator package in the official repositories, therefore we must compile and install it from the sources. Before we can do this, we need to install some prerequisites.
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How To Update all CentOS/RHEL servers remotely using a shell script
#!/bin/bash
#
# A simply shell script to update remote CentOS/RHEL servers
# You must have ssh public and private key installed. This will save a lot of time if you
# have many servers.
#
# by Adi https://blog.up-link.ro
# May 2010
# an array to store ssh commands for each server
hosts=(
"ssh root@192.168.1.1 yum update -y"
"ssh root@192.168.2.1 -p 2222 yum update -y"
"ssh adi@192.168.3.1 -t sudo '/usr/bin/yum update -y'"
)
# read the array and launch the ssh command
for sshcmd in "${hosts[@]}";do $sshcmd;done
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