Introduction To Program And Linux Commands For New Programmers

Program :

Program is the combination of information & Operations/ instructions.

Ex: x = 10 #information y = 20 # information res = x + y # operation print (res) #operation

Classification of Program :

Any program can be classified into TWO types :

1. Application Program

2. System Program

Application Program: The program that user can start and user can stop is know as Application Program.

Ex: VLC Player, Whatsapp, Facebook System Program : The program that user can't start and user can't stop is know as System Program.

Ex: Operating System, BIOS, etc

Source code : which code is written by end user is known as source code executable code / machine code / binary code : which code is written by end user is known as machine code .

Basic Linux Commands :

ctrl + shift + + increase font size

ctrl + - decrease font size

pwd present working dir

ls to get the list of files and dirs (dir - directory)

mkdir to create a dir

cd to change dir / select any dir

cd .. to move one step back

rm -rf to delete empty or non empty dir

vi to create and edit a file

first press i to move into insert mode

then write the content

then move out from insert mode by pressing Esc

:w to save and quit

:wq to save and quit

:q! to quit without save

rm to delete a file

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LinkedIn : https://www.linkedin.com/in/archana-prusty-4aa0b827a/

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