File Management & Navigation

ls -lah                    # List files with size, perms
cd /path/to/dir            # Change directory
pwd                        # Print current working directory
mkdir mydir                # Create new directory
touch file.php             # Create new file
rm file.php                # Delete a file
rm -r folder/              # Delete folder recursively
cp file1.php backup.php    # Copy file
mv file.php dir/           # Move or rename file