Bash repo/install Help

[Grizzly]

10 March 2020  at 2:33, Karl Auer wrote:
Re: Bash repo/install Help (at least in part)

>On Mon, 2020-03-09 at 12:24 +0000, Grizzly via ubuntu-users wrote:
>> 2) if wine is already installed, update the correct wine

>I don't use wine, but this will get you installed packages that mention
>"wine". You might be able to use some variant of it to decide what you've got
>installed and what to upgrade.  
  
>apt list --installed   \
>     2> /dev/null    | \
>     cut -d/ -f1     | \
>     grep wine

>Line 1: list all installed packages
>Line 2: deep six an annoying warning
>Line 3: keep just the package names
>Line 4: keep only lines with "wine"

Can't get that to work
Line 1: works as I would expect

after that nothing works