How to view Linux, Apache, MySQL, PHP versions

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Essentials:

View Apache version httpd-v under Linux

View PHP version php-v under Linux

View MySQL version mysql-v (uppercase V) under Linux

1. View Linux kernel version, System Information, commonly used in three ways:

Uname-a;

More/etc/issue;

Cat/proc/version;

2. View the Apache version information

If it is installed through Yum, or RPM, it can be viewed using Rpm-qa |gerp httpd;

Can also be queried through httpd-v;

Of course, after installing Apache, you can directly elink the loopback to view Apache information.

Use service httpd status to view the running status of HTTPD
Use service httpd stop to stop httpd
Use service httpd start to launch httpd

3. View the PHP version information

If it is installed through Yum, or RPM package, you can use Rpm-qa |grep php to view;

Similarly, you can use Php-v to view PHP version information;

In general, mostly by installing lamp, use Phpinfo's test page to view the installed PHP information;

The specific method for the/var/www/under the new index.php file, the specific content is

<?php phpinfo ();? >

Can. Then add the index.php type in the/etc/httpd/conf/httpd.conf file and restart the httpd to get the following results.

4. View the MySQL version information

If it is installed through Yum, or the RPM package is installed, you can use Rpm-qa |grep mysql to view;

You can also use Mysql-v or--help|grep distrib to view;

You can also go to MySQL and then use the command Select version () to view;

or status; Command view.