linux,apache,mysql,php常用查看版本信息的方法

1. 查看linux的内核版本，系统信息，常用的有三种办法：

uname -a; cat /proc/version;

-bash-4.2$ uname -a
Linux apphost 3.10.-514.26..el7.x86_64 # SMP Tue Jul  :: UTC  x86_64 x86_64 x86_64 GNU/Linux

-bash-4.2$ cat /proc/version
Linux version 3.10.-514.26..el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.  (Red Hat 4.8.-) (GCC) ) # SMP Tue Jul  :: UTC 

2. 查看apache的版本信息，如果是通过yum，或者是rpm安装的，可以使用rpm -qa |gerp httpd 来查看；

-bash-4.2$ rpm -qa | grep httpd
httpd-2.4.-.el7.centos.x86_64
httpd-tools-2.4.-.el7.centos.x86_64

还可以通过httpd -v来查询；

-bash-4.2$ httpd -v
Server version: Apache/2.4. (CentOS)
Server built:   Apr   ::

3.查看php的版本信息，如果是通过yum，或者是rpm包安装的，可以使用rpm -qa |grep php来查看；

-bash-4.2$ rpm -qa | grep php
php-common-5.4.-.el7.x86_64
php-5.4.-.el7.x86_64
php-cli-5.4.-.el7.x86_64
php-gd-5.4.-.el7.x86_64
php-devel-5.4.-.el7.x86_64
php-pdo-5.4.-.el7.x86_64
php-mbstring-5.4.-.el7.x86_64
php-process-5.4.-.el7.x86_64
php-mcrypt-5.4.-.el7.x86_64
php-mysqlnd-5.4.-.el7.x86_64

同样，也可以使用php -v来查看php的版本信息；

-bash-4.2$ php -v
PHP Warning:  Module 'pcntl' already loaded in Unknown on line
PHP 5.4. (cli) (built: Nov    ::)
Copyright (c) - The PHP Group
Zend Engine v2.4.0, Copyright (c) - Zend Technologies

4. 查看mysql的版本信息，如果是通过yum安装的，或者是rpm包安装的，可以使用rpm -qa |grep mysql 来查看；

-bash-4.2$ rpm -qa | grep mysql
mysql-community-server-5.7.-.el7.x86_64
mysql-connector-python-2.1.-.el7.x86_64
mysql-utilities-1.6.-.el7.noarch
mysql-community-client-5.7.-.el7.x86_64
mysql-community-libs-compat-5.7.-.el7.x86_64
mysql-community-common-5.7.-.el7.x86_64
mysql-community-libs-5.7.-.el7.x86_64
mysql57-community-release-el7-.noarch
php-mysqlnd-5.4.-.el7.x86_64

也可以使用mysql -v

-bash-4.2$ mysql -V
mysql  Ver 14.14 Distrib 5.7., for Linux (x86_64) using  EditLine wrapper

也可以进入mysql，然后通过命令status来查看；

-bash-4.2$ mysql -utangbing -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7. MySQL Community Server (GPL)

Copyright (c) , , Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> status;
--------------
mysql  Ver 14.14 Distrib 5.7., for Linux (x86_64) using  EditLine wrapper

Connection id:
Current database:
Current user:           tangbing@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         5.7. MySQL Community Server (GPL)
Protocol version:
Connection:             Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn.  characterset:    utf8
UNIX socket:            /var/lib/mysql/mysql.sock
Uptime:                  days  hours  min  sec

Threads:   Questions:   Slow queries:   Opens:   Flush tables:   Open tables:   Queries per second avg: 1.431
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