Re: Does "LC_ALL=C" work on all shells?

[Franco Martelli <martellif67@gmail.com>]

Thanks Max,

On 15/02/24 at 03:28, Max Nikulin wrote:
> > # env LC_ALL=C script -t 2>~/upgrade-bookwormstep.time -a 
> > ~/upgrade-bookwormstep.script
>
> Perhaps LC_ALL=C.UTF-8 is safer. At least several years ago some python 
> scripts (unrelated to Debian upgrade however) failed trying to log e.g. 
> non-ascii file paths, etc.
>
> I would reset LANGUAGE as well otherwise some programs may use localized 
> messages.
>
> Finally, some users might have LC_ALL (despite it is not recommended) or 
> LANGUAGE set in a file like ~/.bashrc. That is why the following 
> approach may be more reliable. Run commands within the "script" session
>
>      LANG=C.UTF-8; LANGUAGE=; export LANG LANGUAGE
>
> with a note concerning csh. To affect messages generated by shell 
> itself, "export" is separated from setting of the variables.

Doesn't LC_ALL=C setting override LANG or LANGUAGE settings? On my 
system I have:

~$ env | grep LANG
LANGUAGE=
LANG=it_IT.UTF-8

and LC_ALL=C override the LANG setting when used inline of the command. 
This approach is to cover all cases, my goal is to do apt/apt-get 
commands output in English when they are executed into a "script" 
session. Thank to Greg's contribute I think I've reached it:

> On 14/02/24 at 21:55, Greg Wooledge wrote:
> > The man page says:
> >
> >         -t[file], --timing[=file]
> >             Output timing data to standard error, or to file when given. This
> >             option is deprecated in favour of --log-timing where the file
> >             argument is not optional.
> >
> > And:
> >
> >         -T, --log-timing file
> >             Log timing information to the file. Two timing file formats are
> >             supported now. The classic format is used when only one stream
> >             (input or output) logging is enabled. The multi-stream format is
> >             used on --log-io or when --log-in and --log-out are used together.
> >             See also --logging-format.
> >
> > One of these paragraphs should give a solution that avoids needing 2>.

The following "script" command syntax should work on all shells (tested 
only in Bash):

# env LC_ALL=C script -T ~/upgrade-bookwormstep.time -a 
~/upgrade-bookwormstep.script


--
Franco Martelli