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rmdir - Removes a directory.

mkdir - Creates a directory. Current user must have write permission in the current directory in order to create a new directory.

grep command, which stands for “global regular expression print,” processes text line by line
and prints any lines which match a specified pattern.

To print only the matched part, use -o option

pwd - Print full name of current/working directory.

cd - Change the shell working directory.

ls - one of the most common commands in Linux. This command lists directory contents. It can also list permissions, owner, size etc. It sorts the file alphabetically by default.

Linux makes sure only proper people can have access to the proper files.
/Linux-Command-File-Permission/

Linux files have a lot of properties

There are different file types in Linux file system.

The Filesystem Hierarchy Standard (FHS) defines the directory structure and directory contents in Linux distributions.

This series is for understanding Linux and its commands.

Install Go and set up paths on Ubuntu.

setting up a new hexo blog and deploy to github pages.