Hello Bastien, On 1/27/21 4:48 PM, roucaries.bast...@gmail.com wrote: > From: Bastien Roucariès <ro...@debian.org> > > Some variables are portable at least under UNIX > > Signed-off-by: Bastien Roucariès <ro...@debian.org> > --- > man7/environ.7 | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/man7/environ.7 b/man7/environ.7 > index d889310d6..ec886d83d 100644 > --- a/man7/environ.7 > +++ b/man7/environ.7 > @@ -242,6 +242,17 @@ tell applications about the window size, possibly > overriding the actual size. > may specify the desired printer to use. > See > .BR lpr (1). > +.SH CONFORMING TO > +The variables > +.B HOME > +.B LOGNAME, > +.B PATH, > +.B PWD, > +and > +.B SHELL > +are specified by > +POSIX.1-1996 > +and should be reasonably portable.
Why this particular version of the standard? You don't explain. I don't have a copy of POSIX.1-1996; where did you find it? I do have a copy of SUSv3, where I expect that much of the detail is the same as 1996, and there are many other environment variables specified in that standard, including TZ, LC_*, LINES, COLUMNS, and TMPDIR. If you start mentioning standards, but you list only HOME, LOGNAME, PATH, and PWD, I think it implies to the reader that those other variables are *not* specified in the standard. If we're going to document which EVs are in the standards, (and I'm not sure it is something we want to do), then I think the information needs to be more consistently done, and also in the commit message I would want much more precise details about where the info about each variable was foind. Thanks, Michael > .SH NOTES > The > .BR prctl (2) > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
