Re: [Help-bash] procps output truncated due to bash setting $COLUMNS

[Roman Rakus]

On 01/08/2013 05:57 PM, Jan Engelhardt wrote:
> On Tuesday 2013-01-01 12:20, Pierre Gaston wrote:
>
> > >          The question here is: should bash not set $COLUMNS, or should ps
> > >          ignore $COLUMNS if not outputting to a tty, or something else?
> >
> > Bash sets COLUMNS when interactive, but it does not export it so it
> > should not interfere with other tools unless it is exported in one of
> > your startup files.
>
> Hrrrm.
>
> 17:57 nakamura:~ > unset LINES COLUMNS
> 17:57 nakamura:~ > perl -le 'print $ENV{COLUMNS}'
>
> 17:57 nakamura:~ > bash --noprofile --norc
> bash-4.2$ perl -le 'print $ENV{COLUMNS}'
> 80
>
> It would seem it exports it by default.
On my box it isn't:
$ bash
$ echo $LINES
25
$ env | grep LINES
$ exit

Using Fedora linux.

RR