How to see Ip Address in Linux Machine

How to edit or write a file in Linux

To open a file vi filename to edit file press insert or i and to exit escape :wq!  exit without write anything escape:q!

How to see configuration of a Linux system

All configuration files are located in proc files on Linux. To see CPU Info on Linux, see below command cat proc/cpuinfo To see Memory Info on Linux, see below command cat proc/meminfo or free -m or free -g

How to start Mysql on Linux

To start Mysql on Linux : cd etc/init.d/mysqld start or cd etc/init.d/mysql start