Files cmd

1) Go to the Dash and type terminal  

     or    Open Terminal :  Ctrl + Alt + T
2) maha@home: ~$

maha = username
home = computer name

: = separator

~ = root directory

$ = regular user
# = root user(admin)

Absolute Paths:
    /home/user/downloads

Present Working Directory : pwd
   this cmd return out :  /home/guru99

Change directory :  cd \ myfolder

Navigating to home directory : cd.  
or cd ~

Moving up one directory level: cd ..

Moving to root directory:  cd /

The root of the file system in Linux is denoted by ‘/’

Type ‘cd /’ to move to the root directory.

Moving to multiple directories :  d /dev/cpu