TOOLS TO HELP YOU LEARN
teachers, students, everyone
Connecting to Pi
- To connect to the Raspberry Pi you need it's IP address.
Hover over the wifi icon and the status and ip address will popup. Take note of the IP Address.
- Open up Terminal on your PC or MAC. and type in the following (replace the IP address with the IP of your Pi): ssh firstname.lastname@example.org
Note: pi is the username for the raspberry pi
- you will be prompted to enter a password. If you didn't change the default, it should be "raspberry"
- Now let's look around. Look at all the files in the current directory by using "ls"
let's make a directory called "MyPi" by using the "mkdir" keyword - mkdir MyPi
- Create a file called mifile and add text to it. "Hello, World"
Here are some commands that might help you
cd - change directory
cat - prints contents of a file
cp file1 file2 # copy file1 to file2
cp file1 directory # copy file1 into directory
pwd - Show current working directory
cd ../ - this goes back one directory
grep - Look for text in files. List out lines containing text (with filename if more than one file examined).
grep "hi there" file1 file2 ... # look for 'hi there' in files
pwd > directory_path It grabs the output from the command on the left and feeds it to the file on the right
echo 'Hello, cruel world!' >> directory_path //add to end of file
du # which is short for disk usage. It tells you how much memory each subdirectory or file contained inside your current directory is using,
ls -l | grep "Aug" # does command on left of pipe and sends results to right side command to work on.
nano #allows you to edit files. This is a lightweight text editor
A; B Run A and then B, regardless of success of A
A && B Run B if A succeeded
A || B Run B if A failed
A & Run A in background.
passwd - change password
sudo adduser bob - create a new user named bob
- Use echo 'Hello, cruel world!' >> directory_path //add to end of file
to add text to end of jpg image