How to install a PPTP Server

A couple of days ago I had to install a Point-to-Point Tunneling Protocol (PPTP) Server on a Centos 5.6 distribution (was a favor for a friend). In this case it is used to create a simple Virtual Private Network (VPN) to tunnel all the traffic through the server’s internet connection. 1. Make sure that you …

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How to copy only specific files uploaded through FTP

Today I’m going to show you a nice way to sync only specific files from user directories to a “fast speed download” server. Basically, all my users upload resources (maps, sounds, models, etc) for a Counter Strike 1.6 Server through FTP. The issue was the fact that all these files had to be copied to …

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How to pass RHCE/RHCT exam! – part 4

This post will be related to the use of grep, sed, and awk to process text streams and files.


Is a command searches a file for lines containing a match to the given strings and prints the matching lines.
It is mainly used in the following combinations:

grep 'some string'  given_file
cat given_file | grep 'some string'
command | grep 'some string'

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