2>/dev/null && {...} need explanation
 

Hi everybody who read this message. I am beginer and I need a little help...

ifconfig eth1 up 2>/dev/null && {...

please explain this 2>/dev/null && {...

thanks

"2>" redirects standard error messages to an output.
You can think it as the normal redirection.

/dev/null means you're redirecting your error messages to "trash". See http://linux.oreillynet.com/pub/a/linux/lpt/13_14.html for further info.

Then, "&&" says to wait for the first part of the command to complete before starting what comes after "&&".

Thank you tchernobog for help :)