[CentOS] whats wrong with my internet connection checker script?

Keith Roberts keith at karsites.net
Sun Dec 26 22:35:30 UTC 2010


On Sun, 26 Dec 2010, S Mathias wrote:

> To: centos at centos.org
> From: S Mathias <smathias1972 at yahoo.com>
> Subject: [CentOS] whats wrong with my internet connection checker script?
> 
> $ true && true || echo hi
> $ true && false || echo hi
> hi
> $ false && true || echo hi
> hi
> $ false && false || echo hi
> hi
> $ ping -W 1 -c 4 google.com >& /dev/null | grep -q "100% packet loss" && ping -W 1 -c 4 www.yahoo.com >& /dev/null | grep -q "100% packet loss" || echo "no internet connection"
> no internet connection
> $
> ping -W 1 -c 4 google.com >& /dev/null | grep "100% packet loss"
> $
> ping -W 1 -c 4 www.yahoo.com >& /dev/null | grep "100% packet loss"
> $

Would a bash script be more simple, rather than trying to do 
all the piping stuff on one line?

Keith

-- 
In theory, theory and practice are the same;
in practice they are not.

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