linux command

The command in Terminal terminal. Linux users need to learn basic commands do. And to understand the order and format of the command to have some reasonable. Although there is a graphics program to use. But sometimes some of the commands through terminal Terminal would do better and more convenient.
Need to know basic commands they include.
cd: move the activate command Mercer terminals.
sudo: root for exercise.
"sudo apt-get update": update the list of programs.
"sudo apt-get install xxx": use install xxx.
"sudo apt-get upgrade": the upgraded version of the program xxx.
"sudo apt-get remove xxx": the removal program xxx.
"man xxx": a display model parameters used in conjunction with a church and a description of the meaning. Of different parameters. This command will help us in learning and deployment of command is very different when running this command will include information that describes the value that we will see if from this mode, press the button. q will return to a church of the same line.
"info xxx": it describes the commands similar to the xxx command man.
Initially new users should know and understand the meaning of these commands first and then gradually learn the other commands to the man and info commands to optimize.