Hello Bastien,
Thanks. This looks better. But still some things to
improve, I think.
On 1/30/21 12:29 AM, roucaries.bast...@gmail.com wrote:
> From: Bastien Roucariès
>
> Document the purpose of the envirment mechanism, compared to the
s/envirment/environment/
> command line argument of a program. Document particularly that
> the environment is shared by many programs and is inherited.
>
> Define also the so called process environment and "the environment"
s/so called/so-called/
> concept that are used in other manpages.
s/manpages/manual pages/
>
> Signed-off-by: Bastien Roucariès
> ---
> man7/environ.7 | 26 ++
> 1 file changed, 26 insertions(+)
>
> diff --git a/man7/environ.7 b/man7/environ.7
> index 3c2769bfb..d1e86ee8d 100644
> --- a/man7/environ.7
> +++ b/man7/environ.7
> @@ -43,6 +43,32 @@ The variable
> .I environ
> points to an array of pointers to strings called the "environment".
> The last pointer in this array has the value NULL.
> +.PP
> +At time of execution, a program receive context information by two
> mechanisms.
> +The first way is the program arguments, represented by the arguments of
> +.I main
> +function,
> +.I argc
> +and
> +.I argv
> +variables. The second way, is the
> +.I environ
> +variable as discuted in this manual.
Oui en français c'est discuter; mais en anglais: to discuss
> +.PP
> +The program arguments are typically used to pass so-called command-line
> argument specific to
Source lines should be no more than 75 columns or so.
s/so-called command-line argument/values that are/
> +a particular use of the program being invoked, thus changing the program
> behavior to an use case.
s/, thus changing the program behavior to an use case//
(This test does not really add to the explanation.)
> +The environment, on the other hand, keeps track of information that is
> shared by many programs and
> +rarely changes.
> +For example, a running process can query the value of the
> +.B TMPDIR
> +environment variable to discover a suitable location to store temporary
> files.
> +.PP
> +Standard environment variables are used for information about the user’s
> home directory,
> +current language,...
s/.../ and so on./
> +An user can define additional variables for other purposes.
s/An/A/
(Because the "u" is iotized -- "a 'yooser'") [1]
> +The set of all environment variables that have values is collectively known
> as
> +the process environment or simply the environment.
> +.PP
> This array of strings is made available to the process by the
> .BR execve (2)
> call when a new program is started.
Thanks,
Michael
[1] https://www.quickanddirtytips.com/education/grammar/a-versus-an
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
