Basic linux command, 90daysofdevops

After the Introduction to DevOps, today on our second day we are discussing the very basic linux commands

This command is used to list files or directories in Linux and other Unix-based operating systems.

ls

Type this command to list the contents of the directory in a table format with columns including.

ls -l

Type this command to list files or directories including hidden files or directories. In Linux, anything that begins with a . is considered a hidden file.

ls -a

ls *.sh

Type this command to list the files and directories with index numbers in inodes.

ls -i

ls -d */

Directory commands

pwd

(Print work directory) Use this command to know the present working directory
cd path_to_directory

Use this command to change the directory to the desired path.
cd ~ or just cd

Use this command to change the directory to the home directory.
cd -

Use this command to go to the last working directory.
cd ..

Use this command to change the directory to one step back.
cd ../..

Use this command for the contents two levels above.
mkdir directoryName

Use this command to make a directory in a specific location
mkdir .NewFolder

Use this command to make a hidden directory (also . before a file to make it hidden)
mkdir A B C D

Use this command to make multiple directories at the same time.
mkdir /home/user/Mydirectory

Use this command to make a new folder in a specific location
mkdir -p A/B/C/D

Use this command to make a nested directory. -p is used to make the parent directory
history

Use this command to get all the used command history.
clear

Use this command to clear the terminal
rmdir A/B/C/D -p

Use this command to delete a directory. Use -p flag to delete the parent directories as well.
touch Myfile.txt

Use this command to create a file.
cat

Use this command to view the content of a file.
--help

Use this command to know more about the command. Example ls --help.