Basic Linux command (tree)

The tree command is a useful utility for visualizing directory contents hierarchically. It may require installation on some Linux systems, with commands like sudo apt install tree for Debian/Ubuntu. You can display the current directory's structure simply by typing tree. To view a specific directory, provide its path after the command. The -d flag allows you to display only directories, omitting files from the output. Using the -f option will prepend the full path to each file and directory listed. The -p flag displays the permissions for every file and directory. To control the depth of the displayed hierarchy, use the -L option followed by the desired level. The -sh options combined show the size of each file. Additional options include -a for hidden files, -F for file type indicators, --prune to exclude empty directories, and -u/-g to show user/group information.