Shell Programming and Scripting

Hi
I am writing a script to check wheather the web page is up and running. I dont want to download the web page.. I

I used wget --spider command. but i am not getting anything.

can some one tell me the command to the web page..

if the page is up and running I should send a mail to my frend saying the web page is not down..otherwise i should print a message saying the web page is down.

i guess you can ping the server.

Hi Ahamed. Perhaps you could give this a try:

Code:

website="www.google.gnorky"
if ! wget --spider $website >/dev/null 2>&1; then
  echo Now I should send an email about $website
fi

A ping on a server just checks if the server is online but not if a webserver runs on it son neither if a web page is present

Hi

Code:

website="www.google.gnorky"
if ! wget --spider $website >/dev/null 2>&1; then
  echo Now I should send an email about $website
fi

for the above code what will be the response.since i am working in the production server i dont want to crash. I want to test the response of a page like http://www.yahoo.com. from the out put of the command i should be able to conclude wheather it is running the page is down

The response on stderr and stdout gets discarded and the page does not get downloaded because of the --spider option. What remains is the return code of the wget command. Which is used by the if statement to determine if the page can be loaded (return code 0) or can not be loaded (return code 1).

If you are unsure about a command you could run it on a test server. But you can run this command as a regular user anyway.

Hi Scrutinizer,
can u explain me this below code and what it does. can i redirect it to another directory other then /dev/.


>/dev/null 2>&1;