Basic unix commands

Bellow are some basic linux commands required for setting up the hadoop environment.

$hostname
This command will display the name of your host

$sudo su
This command is used for login as super user

$addgroup  name of group
This command is used for adding a group

$adduser  name of user
This command is used for adding a user

$ls
This command is used for display the list of files inside a directory

$pwd
This command is used for display the present working directory

$cd
This command is used for changing the directory

$mkdir
This command is used for creating a  directory

$touch filename
This command is used for creating a blank file

$kill -9 processId

This command is used for manually killing a running process

$who 
This command is used for knowing that who is logged in the system

$df
This command is used to to how much disk space is available