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shared object

Explains: Linux linux-gate.so.1 Library / Dynamic Shared Object [ vdso ]

I'm using the ldd command to get information about /usr/local/nginx/sbin/nginx binary and I see linux-gate.so.1 library. However, I'm unable to find out this file anywhere on the system? What is linux-gate.so.1 and how do I copy this file?
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CentOS / RHEL: Install MySQL PHP Extension

How do I install a module or extension for PHP applications that use MySQL databases under CentOS / Redhat / RHEL / Fedora Linux?
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PHP not connecting to a MySQL database server

Q. I have Apache Web server and MySQL configured. Everything works fine except I am not able to connect to a MySQL database server (I am able to connect mysql server with mysql client). So how do I configure or connect PHP scripts?

A. You need to install MySQL module for php4 or php5. Without php-mysql shared object or module, php scripts won't able to connect to MySQL database server.

Debian / Ubuntu Linux User

To install type the following command:
# apt-get install php4-mysql
if you are using PHP5, enter:
# apt-get install php5-mysql

RHEL <= 4 user

If you are using Red Hat Linux:
# up2date php-mysql

If you are using Fedora / CentOS / RHEL 5 Linux:
# yum install php-mysql
Restart apache to take effect. Now you will be able to connect MySQL via PHP scripts.
# service httpd restart