[LAU] using Jack an interface to ecasound

Ralf Mardorf ralf.mardorf at alice-dsl.net
Fri Jan 20 13:50:13 UTC 2017

On Fri, 20 Jan 2017 14:26:43 +0100, Gerhard Zintel wrote:
>On Friday 20 January 2017, Ralf Mardorf wrote:
>> To list all jack related packages that are installed run
>> mkdir /tmp/empty_dir
>> cd /tmp/empty_dir/
>> dpkg -l *jack* | grep ii  
>for you are not saving anything, you don't need to create a new
>folder. Furthermore my shell tries to expand *jack*; you have to use
>the ' character (don't know its name in English) like this:
>dpkg -l '*jack*' | grep ii

Thank you,

I'm using Arch Linux and didn't know this, but since I'm aware that
"apt" does not have a stable CLI interface, I wanted to ensure that
"dpkg -l" works. I already used "dpkg" instead of "apt", since even not
all DEB based installs provide "apt", at least not one still supported
Ubuntu release. Running "dpkg -l *jack* | grep ii" in an empty
directory gains nothing over "dpkg -l '*jack*' | grep ii", but I didn't
know that "dpkg -l '*jack*' | grep ii" does work. I'll try to keep this
in mind, OTOH the transition to apt, at least for Ubuntu, already
started, so dpkg soon or later will be obsolet.


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