Directory Basics

pwd(Present working Directory):

• It shows the a user’s current working directory.
• pwd always returns the absolute path.

Navigating directories:

• Absolute path: It is the full path starting from the top level path which is / to my current working directory. The absolute path will always start with / at the beginning.
• Relative path: It is not a full path but rather a path which depicts the location relative to our own current working directory.
• For example: we are in /home/user1 directory. To move upwards either we can write using the relative path like this → cd Desktop/ , or we can write using absolute path like this → cd /home/user1/Desktop/

To go back to home directory:

• Use the command cd or cd ~

Switching between current and previous directories:

• Command → cd -

Viewing directory hierarchy:

tree command:

• tree -a → Includes hidden files in the output.
• tree -d → excludes files from the output.
• tree -h → Displays file size in a human readable format.
• tree -f → prints the full path of each file.
• tree -p → prints file permissions in the output.