Basic linux commands

Beginning Linux command

Here there are some of the basic linux command :-

1. pwd - Print Working Directory: Displays the current directory.

2. ls - List Files and Directories: Lists the files and directories in the current directory.

3. cd - Change Directory: Changes the current directory to the specified location.

4. mkdir - Make Directory: Creates a new directory.

5. rm - Remove: Deletes files or directories.

6. cp - Copy: Copies files or directories to a specified location.

7. mv - Move or Rename: Moves files or directories to a new location or renames them.

8. cat - Concatenate: Displays the contents of a file.

9. find- used to search for files and directories . It allows you to locate files by their names, types, sizes, modification times, and other attributes.

10. chmod - Change Mode: Changes the permissions of a file or directory.

diff - To find the difference between two files

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What is the Linux command to:

📌 Check your current/present working directory. 📂

• pwd command is used.

• 

📌 List all the files or directories, including hidden files. 🔍

• ls is used to list the file and directory.

  

  ls -a is used to list the hidden files and directories as well.

  

📌 Create a nested directory A/B/C/D/E. 📂

• mkdir -p is used for nested directories. Here,-p make parent directories as needed

  

  

📌 View the contents of a file. 👀

• cat <file_name> is used.

📌 Change the access permissions of files. 🔐

• chmod +rwx <file_name> for adding read, write and execution permissions, and

• chmod -rwx <file_name> for removing the read , write, and execution permissions.

NOTE :- You may also employ a single flag at a time.

• +r for giving read permission

• +w for giving written permission

• +x for giving execute permission

I have created the hello.txt file using the command touch <file_name>. Initially check the permission using the ls-l

After giving the execution permissions.

use ls -l and see what happens in 😁😁

📌 Check the command history to view the commands you have executed so far. ⏳

• history command is used.

📌 Remove a directory/folder. 🗑️

• rm -r <directory/folder name>

  This command is also capable of removing the files.

  

📌 Create a fruits.txt file and view its content. 🍎📄.

• to create: touch <file_name>

  

• to view: cat <file_name>

📌 Add content to the file ✏️📄.

• In fruits.txt (One in each line) - Apple, Mango, Banana, Cherry, Kiwi, Orange, Guava.
  To add content, we use the editor. I will use the vim editor.

To activate the vim editor use vim <file_name>.

Note :- To activate the insertion mode press "i" of your keyboard and to save the work press esc + : + wq

• w for the write and

• q for quit.

📌 Display the specific line in the file.

• Display only the top three fruits from the file 🍎🥭🍌.

  head -n <file_name> "n" denotes how many lines you have to display.

• To Show only the bottom three fruits from the file 🥝🍊🍊.

📌 Create a Colors.txt file and view its content. 🎨📄

• to create:- touch <file_name>

• to view:- cat <file_name>

📌 Add the following content to the Colors.txt file (one color per line)

📌 Find the difference between the contents of the fruits.txt and Colors.txt files. 🍎🎨

• diff file1.txt file2.txt

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