Top 19 Linux OS Commands Every Programmer Should Know in 2022-23

 

 

1) cd – navigate

 

cd command is used for navigating inside the directories inside the linux os system.

 

 

 

Here we have the series of commands to go to the nested or subdirectories. And we have the command to go to the parent directory.

 

 

2) ls – list files

 

 

This command is to list out the different files available inside the operating system.

 

 

 

 

Here if you want to list out all the files in a vertical manner you need to add the -l flag after the command

 

And also we are adding the directory name dir1 after this command to list out the files of dir1

 

 

3) nano/vim

 

This command is used to edit files inside the linux os system. Both nano and vim are text editors in linux os system.

 

 

Here the syntax of the command is very simple. Just type the nano or vim followed by filename to open the file inside the editor to edit files.

 

 

4) pwd – Display current directory

 

This command is to display the current working directory where you are developing the current application. The command is very simple you just need to write pwd

 

 

 

5) clear (clear the terminal)

 

This command from the name itself is used to clear out the terminal inside the linux os system. The command are as follows

 

 

 

6) cat (Output Content of File in Console)

 

This command is used to print out the contents of the file using the filename provided as argument. The command is as follows

 

 

Here you can see that we are opening the content of the files using the filename as well.

 

 

7) Sudo (Run Commands as Administrator)

 

This command is also used to execute all the commands as an administrator. Sometimes administrator rights are required for certain operations. For this reason this command is very important.

 

 

 

8) grep — filter output (Search within a file)

 

This command is used to search a specific term in long files of long sizes. This command is very much powerful whenever you want to do filtering or searching of a word within a text file.

 

 

 

 

8) history (Show recent commands)

 

This command is useful in linux os system to list out all the recent commands which is executed by the user. The list will be vertical list and you can see all your commands in the history.

 

 

 

8) man (Show documentation or help page)

 

This command is useful in printing out the help page or documentation about different topics inside the terminal. The command syntax is very simple which are shown as follows

 

 

 

9) Wget (Downloads Files From Internet)

 

This command is very useful in downloading any file from the internet to local disk straight from terminal in linux operating system. The syntax of the command is very simple which are as follows you write wget followed by the url of the file to download

 

 

 

10) mkdir (Creates New folder or Directory)

 

This command is very useful in creating new folders or directories inside the linux operating system. The syntax of the command is very easy. Just write mkdir followed by the name of the directory

 

 

 

11) Touch (Creates New Files)

 

This command is very useful in creating new files if they don’t exist in the file system. The syntax is very useful just write touch followed by the name of the file to create

 

 

 

12) du (Calculate File & Directory Size)

 

This command is very useful in calculating the size of the files and directories and printing them inside terminal in linux operating system. The syntax of the command is as follows

 

 

 

13) mv (Moving or Rename Files)

 

This command is very useful in moving files from location to another location and also renaming multiple files inside linux operating system. The Syntax of the command is very simple which is shown below

 

 

 

14) mv (Moving or Rename Files)

 

This command is very useful in moving files from location to another location and also renaming multiple files inside linux operating system. The Syntax of the command is very simple which is shown below

 

 

 

15) cp – copy file/directory

 

This command is very useful in copying multiple files & directories from location to another location. The Syntax of the command is very simple which is shown below

 

 

 

16) rm – delete file/directory

 

This command is very useful in deleting or removing multiple files & directories from file system and shifting to trash or recyclebin or removing it permanently. The Syntax of the command is very simple which is shown below

 

 

 

17) tar – pack/unpack archives

 

This command is very useful in extracting the contents from zip files or archives files. .tar files are similar .zip files in windows. This commands let you pack or unpack .tar archives files. The syntax of the command is shown below

 

 

 

18) chmod (Adjust Files Rights & Levels)

 

This command is very useful in adjusting the files and rights of a particular file whether it is readable or writable or both. You can check the rights and levels using this command for a particular file

 

 

 

19) chown (Customize owner/group)

 

This command is very useful in adjusting the owner group of a particular files or directory.