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grep command

MySQL/MariaDB Server: Bind To Multiple IP Address

I have MySQL/MariaDB database system running on a FreeBSD/Linux server. The server has multiple ip address. The mysqld used by many websites hosted on two other CentOS Linux based servers. I would like to bind MySQL sever running on a Linux or Unix-like server to more than one IP address such as,, and How can I bind mysqld to multiple ips?
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PHP: Disable APC Module At Command Line CLI Scripts / Cron Scripts

I have a PHP application developed and running on LAMP. I have APC installed on the server. APC is a free, open, and robust framework for caching and optimizing PHP intermediate code. The APC based caching is good for my web site, but my cron jobs and php cli scripts fail to
fetch correct data due to caching. How do I disable APC module at the command line (php-cli) under Linux or Unix like operating systems for all my cron jobs?
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Grep Include Only *.txt File Pattern When Running Recursive Mode

I‘m using Debian Linux as my development workstation. I would like to search a directory called ~/projects/ recursively for “foo” word only for *.txt files. How do I search all text files in ~/projects/ for “foo” word using grep command?
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HowTo: Use Grep Command In Unix / Linux To Search Subdirectories

I would like to search and find all files which contain a word called “main()” for all directories located in $HOME/project/school. How do I use the grep command to find text including all subdirs under Unix or Linux operating systems?
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Linux Command To Find SATA Link Speed Such as 1.5 / 3.0 / 6.0 Gbps [ Hard Disk ]

How do I find out my SATA link speed? How do I make sure my sata hard disk is working at 6Gbps speed and how do I verify this on a Linux server running on HP or IBM amd64 hardware?
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HowTo: grep Text Between Two Words in Unix / Linux

I got over 100s of HTML files in the following format:

 <TITLE>Statistics for ABC LTD - January 2007 - Rang IDXYZZAZZZZ</TITLE>
<BODY BGCOLOR="#E8E8E8" TEXT="#000000" LINK="#0000FF" VLINK="#FF0000">
<H2>Statistics for ABC LTF</H2>
Summary Period: January 2007<BR>
Generated 01-Feb-2007 06:40 CET<BR>
my data 1
my data 2
my data 3
my data 10000
my data N times

Generated by MyAppDbStatsWriter (UNIX) version 1.9b2

How do I extract text between two words (<PRE> and </PRE>) in unix or linux using grep command?
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FreeBSD: Display Laptop Battery Charge Status

How do I find out out details about my FreeBSD based Laptop battery status and other information from command prompt? Howto do I check battery charge status at shell prompt?
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Linux / Unix: Bash Shell See All Exported Variables and Functions

How do I see a list of all exported variables and functions under Unix bash shell?
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Unix / Linux: grep Word Count Command

How do I count words using grep command under Linux / Unix like operating systems?
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Linux/Unix: grep Command Show Line Numbers While Displaying Output

I am a new Unix (OS X to be specific) user. How do I show line number while displaying the output using the grep command on Linux or Unix-like operating systems? How can I show matched lines together with their line numbers on my Terminal?
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