1. Linux File System Commands
Navigating the File System
ls - list the files in the current directory
File and directory names are case sensitive
cd /home/pi/Robot - cd change directory to the Robot directory; the absolute path starts at the root
cd Desktop - cd change directory to the Desktop; this relative path starts at the current directory
Copyright (c) 2017 by Dr. E. Horvath

2. Copyright (c) 2017 by Dr. E. Horvath
File Operations
Copy a file to a directory
cp filename.py directoryname
Copy a file to a new file
cp filename.py newfilename.py
Make a backup copy of your files to a USB Flash Drive; replace D786-BE1B with the identifier for your USB Flash Drive
cp filename.py /media/pi/D786-BE1B
When done, click on the upper right hand corner to safely eject the USB Flash Drive
Copyright (c) 2017 by Dr. E. Horvath

3. Copyright (c) 2017 by Dr. E. Horvath
File Operations
Rename a file
mv filename.py newfilename.py
Move a file to a directory
mv filename.py directoryname
Copyright (c) 2017 by Dr. E. Horvath

4. Using the nano Text Editor
Editing files with nano
nano filename.py
nano robot_move.py
# Make changes to the file; navigate with
# the arrow keys
Ctrl+O # Control plus O to write out
Hit the Enter Key # Accept the changes
Ctrl+X # Control plus X to exit
Copyright (c) 2017 by Dr. E. Horvath

5. Running Python in the command prompt
Type python3 to execute a Python file
python3 filename.py
Example:
python3 robot_move.py
Copyright (c) 2017 by Dr. E. Horvath

6. Copyright (c) 2017 by Dr. E. Horvath
Finding Files
Searching for files with a specific name.
The * are wildcards. This example shows a search for any Python files which have robot in the file name.
Search the home directory
find ~ -name *robot*.py
Search the USB Flash Drive; replace D786-BE1B with the identifier for your USB Flash Drive
find /media/pi/D786-BE1B -name *robot*.py
Copyright (c) 2017 by Dr. E. Horvath