runing command on startup

Try edit /etc/rc.local described in https://www.raspberrypi.org/documentation/linux/usage/rc-local.md IT May helps.

Add theat command in .bashrc file and it will do

thanks People, i finally made it work by using this below command: cd /home/pi/RPi_Cam_Web_Interface && ./install.sh and saved this as an Script and finally mentioned this script at the botom line of "sudo nano .bashrc" and now when i boot my pi,the software is installed freshly.

I believe you could also use sudo crontab -e and just add a command with the absolute path (/usr/bin/foo). To run a command at boot and reboot in the background (so it doesn't prevent pi from continuing boot), add @reboot /usr/bin/foo&

There are a few ways to execute a boot command. I use the rc.local file. sudo nano /etc/rc.local Add your shell command before the exit 0

for entering two enter keypress you can something along the lines of

cd RPi_Cam_Web_Interface && ./install.sh
echo | <yourfinecommandhere>
sleep 5s
echo | <yourfinecommandhere>