DevOps 90 days Challenge

DevOps 90 days Challenge

Day 2 Task Linux Command

Hi 👋there,

Now we are on the Day 2 task of the Linux Basic command.

What is Linux?

Linux is a free and open-source operating system (OS) that was created by Linus Torvalds in 1991. It is based on the Unix operating system.

Linux is known for its stability, security, and flexibility.

There are many different versions of Linux, known as “distributions,” each with its unique features and capabilities. Some of the most popular distributions include Ubuntu, CentOS, and Red Hat Enterprise Linux.

Basic Linux Command?

  1. ls – The most frequently used command in Linux to list directories

  2. pwd – Print working directory command in Linux

  3. cd – Linux command to navigate through directories

  4. mkdir – Command used to create directories in Linux

  5. mv – Move or rename files in Linux

  6. cp – Similar usage as mv but for copying files in Linux

  7. rm – Delete files or directories

  8. touch – Create blank/empty files

  9. ln – Create symbolic links (shortcuts) to other files

  10. cat – Display file contents on the terminal

  11. clear – Clear the terminal display

  12. echo – Print any text that follows the command

  13. less – Linux command to display paged outputs in the terminal

  14. man – Access manual pages for all Linux commands

  15. name – Linux command to get basic information about the OS

  16. whoami – Get the active username

  17. tar – Command to extract and compress files in Linux

  18. grep – Search for a string within an output.

  19. head – Return the specified number of lines from the top

  20. tail – Return the specified number of lines from the bottom

  21. diff – Find the difference between two files

  22. CMP – Allows you to check if two files are identical

  23. comm – Combines the functionality of diff and cmp

  24. sort – Linux command to sort the content of a file while outputting

  25. export – Export environment variables in Linux.

  26. zip – Zip files in Linux

  27. unzip – Unzip files in Linux

  28. ssh – Secure Shell command in Linux

  29. service – Linux command to start and stop services

  30. ps – Display active processes

  31. kill and kill all – Kill active processes by process ID or name

  32. df – Display disk filesystem information

  33. mount – Mount file systems in Linux

  34. chmod – command to change file permissions

  35. chown – Command for granting ownership of files or folders

  36. ifconfig – Display network interfaces and IP addresses

  37. traceroute – Trace all the network hops to reach the destination

  38. wget – Direct download files from the internet

  39. apt, Pacman, yum, rpm – Package managers depending on the distro

  40. sudo – Command to escalate privileges in Linux

  41. ls -l - list

    check the present working directory.

    The “pwd” command stands for “print working directory.” It is used to display the full path of the current working directory.

List all the files or directories including hidden files. ls -a?

ls is a command that is used to list the files and directories in a directory. The -la option tells ls to display the files in a long format and include hidden files.

ls -la

How to create a nested directory A/B/C/D/E mkdir -p A/B/C/D

The command to create a nested directory is mkdir -p A/B/C/D/E. The -p switch creates parents’ directories

Please, feel free to drop any questions in the comments below. I would be happy to answer them.

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_ Thank you for reading

_sandhya kumari