Shell & python scripts to blink LED on Raspberry Pi GPIO. RPi.GPIO and WiringPi2

led_blink.py

#!/usr/bin/env python

import RPi.GPIO as GPIO
import time

LEDPIN = 25

#GPIO.setwarnings(False)        # Suppress warnings

#GPIO.setmode( GPIO.BOARD )
GPIO.setmode( GPIO.BCM )
GPIO.setup( LEDPIN, GPIO.OUT )

c = 0
while c < 5:
    GPIO.output( LEDPIN, True )
    time.sleep( 1.0 )
    GPIO.output( LEDPIN, False )
    time.sleep( 1.0 )
    c = c + 1
GPIO.output (LEDPIN, GPIO.LOW)
GPIO.cleanup()

led_blink.sh

#!/bin/sh

# use GPIO25
echo 25 > /sys/class/gpio/export
sleep 1

# use GPIO25 for output
echo out > /sys/class/gpio/gpio25/direction

# set HIGH
echo 1 > /sys/class/gpio/gpio25/value
sleep 1

# set LOW
echo 0 > /sys/class/gpio/gpio25/value

# close GPIO25
echo 25 > /sys/class/gpio/unexport

led_blink_wiringpi2.py

#!/usr/bin/env python

import wiringpi2 as wp
import time

LED_PIN = 25

wp.wiringPiSetupGpio()
wp.pinMode(25, wp.GPIO.OUTPUT)

for c in range(0, 5):
  wp.digitalWrite(25, wp.GPIO.HIGH)
  time.sleep(0.5)
  wp.digitalWrite(25, wp.GPIO.LOW)
  time.sleep(0.5)