Introduction to Linux part - 1

Linux founder - Linus Torvald

Terminal emulator: Is a computer program that emulates a video terminal within some other display architecture.

Shell: A shell is a software interface that's often a command line interface that enables the user to interact with computer.

List of command:

- list command: ls

- make directory command: mkdir folder name

- change directory command: cd

- How to get back into previous directory: cd ..

- command for display the folder: where git

- Hidden file command: ls -a

- which directory you're in right now: pwd(print working directory)

- (.)---------> means current directory

- (..)---------> means previous directory

- if you want to display more information about file: ls -l

- if you want display more information about hidden file: ls -al

- How to get into previous directory: cd ../folder name

- This command show file in the sub-directory: ls -R

- If you want to create a file and write something into it: cat > file.txt

- If you want to display the content of a file: cat

- If you want to know information about command: man echo

- If you want to make directory: mkdir

- If you want to make directory inside directory: mkdir test----->mkdir random------>mkdir random/hello

- If you want to create middle directory between two directory: mkdir -p random/middle/hello

- How to create file: touch name.txt

- How to create file inside a directory: touch test/house.txt

- How to open current directory: open .

- How to open any file or directory: open filename or folder name

- How to copy the file: cp file.txt copy_file.txt

- How to move file into directory: mv file.txt random

- How to rename file or directory: mv file.txt new_name.txt

- How to move directory or file into current directory: mv random/renametext .

- How to delete file : rm file name or rm -rf file name

- How to delete folder: rm -R folder name

- If you want to view first few line of any file: head file.txt or head -n 4 file.txt

- If you want to view last few line of any file: tail file.txt or tail -n 4 file.txt

- If you want to compare the file line by line: diff file.txt total.txt

- If you want to locate the file: locate "*.txt"

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