There is the basic linux command and it's operation
ls – List
ls lists the contents (files and folders) of the current working directory.
mkdir – Make Directory
mkdir makes (or creates) a new directory.
pwd – Print Working Directory
pwd prints the current working directory.
cd – Change Directory
cd sets the given folder (or directory) as the current working directory for the current running session of the terminal
rmdir – Remove Directory
rmdir removes (or deletes) the given directory.
rm – Remove
rm removes the given file or folder. You can use rm -r to delete folders recursively.
cp – Copy
cp copies the file or folder from one location to another location. You can use its cp -r option to copy folders recursively.
mv – Move
mv moves a file or folder from one location to another location.
help
--help lists all the available commands in the terminal. You can use ‘-h’ or ‘–help’ (help has two hyphens here) option with any command to get help for that specific command.
man – Manual
man shows the manual page for the given command.
who – Who Is logged in
who shows the list of currently logged in users.
exit
exit ends the current terminal (bash) session.
shutdown
shutdown shuts down your computer. You can use shutdown -r to restart your computer.
You can refer this screenshots to get best understand of above commands
Arduino is an open-source platform used for building electronics projects. Arduino consists of both a physical programmable circuit board (micro controller) and a IDE that runs on your computer. IDE used to write and upload computer code to the physical board.
Getting Start
buy an Arduino from e bay or arduino site or what ever you known place. There is many arduino product had interdused. Hear we are going to talk about uno mega and nano.
void setup() { /* run once */ }// The code inside this function is run only once, when new code has been uploaded.
void loop() { /* run repeatedly */ }// The code inside this runs on a loop. Without any delay function, the default rate of delay is 1ms.
PinMode(pin_number, INPUT/OUTPUT);// This function declares a given pin to be input or output pin.
digitalWrite(pin_number,0/1/HIGH/LOW);//This function produces a digital signal of either HIGH(5V) or LOW(0V) on the given pin.
analogWrite(pin_number, value);//This function produces an analog signal varying between 0 to 5V on the given pin.
delay(time);// This function provides delay of given time (in milliseconds) during execution of the code.
digitalRead(pin_number);//This function reads the voltage on the given pin and outputs its value as either 0 or 1.
analogRead(pin_number);//This function reads the voltage on the given pin and outputs its value as an integer ranging from 0 to 1023.
Serial.begin(baud_rate);//This function begins serial communication between the microcontroller and the arduino.
Serial.print();//This function prints the value in its argument on the serial monitor of the arduino IDE.
First Arduino project blinking LED
Circuit Diagram
Code
// the setup function runs once when you press reset or power the board
void setup() {
pinMode(LED_BUILTIN, OUTPUT); // initialize digital pin LED_BUILTIN as an output.
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
How to uplode the code Connect Arduino to your computer and select youer arduino bord from the tool=>bord=> and port from tool=>port=> you can compile and uplode the code using sketch menu
Assemble your circuit and upload the code. Enjoy the arduino experiences.
$ git init //Initialize Local Git Repository
$ git add //Add files to Index
$ git status //Check Status of Working Tree
$ git commit //Commit Changes in Index
$ git commit -m 'message' //Commit Changes in Index with message
$ git push //push To Remote Repository
$ git pull //pull Latest From Remote Repository
$ git clone //clone Repository Into A New Directory
$ git branch //create a branch
$ git checkout //Switch between branch
$ git merge //Merge the branch
