'dpkg -l evolution | cat' is actually not the same as 'dpkg -l
evolution'.  dpkg will truncate version information based off what it
detects the local terminal width to be.  Therefore for if someone has a
small terminal emulator window the output will be incomplete like so:

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  evolution      2.21.90-0ubunt groupware suite with mail client and organiz

This isn't very informative as to the specific package version and by
appending '| cat' to the command we are making the terminal widthless.
Using 'dpkg -l | grep PKGNAME' accomplishes the same thing because of
the |.

-- 
Bug reporting instuctions need humanising
https://bugs.launchpad.net/bugs/185897
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