How to check that if a package is installed?

[Oliver Grawert]

hi,
...
> Seems kind of wordy to me for what it really does ...
> 
> dpkg -l |grep torfrodos || echo nope
you definitely want a grep ^ii in there like:

dpkg -l |grep ^ii | grep tofrodos || echo nope

else you will match it even if it was uninstalled or not properly purged
once ...

ciao
	oli
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