# #90DaysOfDevOpsChallenge

# Day 2/90

### Basic Linux commands:

1. Check your present working directory:  
    
    **pwd --> Print working directory**  
    It shows the current working directory that you are in.
    
    ```basic
    ubuntu@ip-000-31-92-000:~/Episodes$ pwd
    /home/ubuntu/Episodes
    ```
    
2. List all the files or directories including hidden files:  
    **ls** option\_flag arguments --> Lists the subdirectories and files available in the present directory.
    
    ```basic
    ubuntu@ip-000-31-92-000:~/Episodes$ ls
    Ansible  Jenkins  Terraform
    ```
    
    **ls -a -->** List all including hidden files and directory
    
    ```basic
    ubuntu@ip-000-31-92-000:~/Episodes$ ls -a
    .  ..  Ansible  Jenkins  Terraform
    ```
    
3. Creating a nested directory A/B/C/D/E  
    mkdir Episodes --> Makes a new folder 'Episodes'
    
    ```basic
    ubuntu@ip-000-31-92-000:~$ mkdir Episodes
    ubuntu@ip-000-31-92-000:~$ ls
    Episodes
    ```
    
    mkdir A B C D --> Makes multiple new folders at the same time
    
    ```basic
    ubuntu@ip-172-31-92-206:~$ mkdir A B C D
    ubuntu@ip-172-31-92-206:~$ ls
    Episodes  A B C D
    ```
    
    mkdir -p A/B/C/D --> Makes a nested folder
    
    ```basic
    ubuntu@ip-000-31-92-000:~$ mkdir -p A/B/C/D
    ubuntu@ip-000-31-92-000:~$ tree -d A
    A
    └── B
        └── C
            └── D
    
    3 directories
    ```
    
    While this blog has provided an overview of some fundamental Linux commands, it is important to note that the Linux command line is vast and offers an extensive array of tools and options. Exploring more advanced commands and their functionalities can further enhance your productivity and allow you to take full advantage of the Linux environment.
    
    Remember, practice is key to becoming proficient in using Linux commands.