[sf-lug] dpkg -l & width ...

[Michael Paoli]

> From: "Daniel Gimpelevich" <daniel at gimpelevich.san-francisco.ca.us>
> Subject: Re: [sf-lug] dpkg -l & width ...
> Date: Wed, 02 Aug 2017 20:56:52 -0700

> On Wed, 2017-08-02 at 20:53 -0700, Michael Paoli wrote:
>> > From: "Rick Moen" <rick at linuxmafia.com>
>> > Subject: Re: [sf-lug] dpkg -l & width ...
>> > Date: Wed, 2 Aug 2017 20:36:11 -0700
>>
>> > Quoting Michael Paoli (Michael.Paoli at cal.berkeley.edu):
>> >
>> >> Yes, that shows it as a shell named parameter ("variable").
>> >> But is it in (exported to) the environment?
>> >>
>> >> $ env | grep '^COLUMNS='
>> >> gives ... what?
>> >
>> > null.  FWIW.
>> >
>> > {shrug}
>>
>> Yes, ... so set - as shell named parameter ("variable"), but
>> not exported into the environment.
>>
>> So, hence, dpkg would know nothing of it ... unless one did
>> something like:
>> $ COLUMNS="$COLUMNS" dpkg -l | cat
>> $ (export COLUMNS; dpkg -l | cat)
>> etc.
>> (if we don't make stdout a non-tty device, dpkg -l will generally
>> figure out width from ioctl call(s) on the file descriptor 1 (stdout)
>> isatty(3) device)
>
> Did you not see my post at 9:31am?

Yes, did see it.  Looks like we all three have similar - I just
checked my typical setup also ... set, but not exported.