1、mysql安裝
#usedel mysql
#groupdel mysql
#groupadd mysql
#useradd -g mysql mysql
#tar -zxvf mysql-5.1.55.tar.gz
#cd mysql-5.1.55
#./configure \
#>—prefix=/program/mysql \ //安裝路徑
#>—localstatedir=/var/lib/mysql \ //數據庫文件存放路徑
#>—with-comment=Source \
#>—with-server-suffix=-Community \
#>—with-mysqld-user=mysql \
#>—without-debug \
#>—with-big-tables \
#>—with-charset=utf8\
#>—with-collation=utf8_unicode_ci \
#>—with-extra-charsets=all \
#>—with-pthread \
#>—enable-static \
#>—enable-thread-safe-client \
#>—with-client-ldflags=-all-static \
#>—with-mysqld-ldflags=-all-static \
#>—enable-assembler \
#>—without-innodb \
#>—with-innodb \
#>—without-isam \
#>—without-ndb-debug \
#>—with-unix-socket-path=/var/lib/mysql/mysql.sock
#make && make install
#cp ./support-files/my-medium.cnf /etc/my.cnf
#/usr/local/mysql/bin/mysql_install_db —user=mysql
#chown mysql:mysql -R /usr/local/mysql
#chgrp -R mysql /usr/local/mysql
#/usr/local/mysql/bin/mysqld_safe —user=mysql &
#chmod +x ./support-files/mysql.server
#cp ./support-files/mysql.server /etc/init.d/mysqld
#chkconfig –add mysqld
#chkconfig –level 2345 mysqld on
#service mysqld restart
#/usr/local/mysql/bin/mysqladmin -uroot password “new_pass” //修改root用戶密碼
#netstat -nplt |grep mysql //查看mysql監聽端口的信息
#ps -aux |grep mysql //查看mysql運行的進程信息
2、mysql密碼恢復
#service mysqld stop
#killall -TERM mysqld
#/usr/local/mysql/bin/safe_mysqld —skip-grant-tables &
#/usr/local/mysql/bin/mysq/mysql
>use msyqlmysql
>upadate user set password=password(“new_pass”) where user=”root”;
>flush privileges;
>exit
#service mysqld start#mysql -uroot -p //如果提示輸入密碼錶明破解密碼成功完成；
3、mysql環境變量的設置：
第一種：
#export PATH=$PATH:/usr/local/mysql/bin/
#export //查看環境變量
第二種：
#vi /etc/profileexport PATH=”$PATH:文件路徑” //通過配置文件修改環境變量（需要註銷系統才能生效）
#env //查看環境變量
第三種：
#vi /root/.bashrcexport PATH=”$PATH:文件路徑” //修改root用戶的環境變量（需要註銷系統才能生效）
#echo $PATH //查看環境變量