14:59 <ehawkvu> is anyone aware of an easier/more portable way to get a username from a uid?

14:59 <ehawkvu> I'm wanting to use uid's in my kiss fork, since they are easier to work w/

15:00 <ehawkvu> all I've come up with so far is this:

15:02 <ehawkvu> getent passwd | awk -F":" '$3 ~ /^<uid>$/ {print $1}'

15:05 <ehawkvu> I did see that it is possible to get the username using 'id'

15:05 <ehawkvu> but the command does not work on busybox, even though it works on ubase & gnucoreutils

15:45 <ehawkvu> also include toybox in that list

15:45 <ehawkvu> the command is "id -un 0"

15:55 <phoebos> does lisp not have a getpwnam(3) wrapper or equivalent?

15:56 <phoebos> both getent and that use of id aren't POSIX

15:58 <phoebos> if you can't do it in lisp, I would write a short (and portable) program in C

15:58 <phoebos> for example, https://github.com/aabacchus/kiss/blob/c-mix/bin/owner.c

16:00 <phoebos> if you want, you could just parse /etc/passwd, which will work 99% of the time

16:03 <ehawkvu> I'm using *emacs lisp*, which in hindsight was possibly a bad move? should be easy to port over though

16:04 <ehawkvu> I think I'm just going to parse /etc/passwd, since like you said it's

16:04 <ehawkvu> almost guaranteed to work

16:04 <midfavila`> it should be trivial to extract using extended regex in elisp

16:05 <midfavila`> i've only done a little bit of work with it though so i won't try and provide code

16:05 <midfavila`> just a suggestion for a jump-off

16:05 <phoebos> sounds good

16:06 <phoebos> that's all getpwnam does anyway

16:29 <ehawkvu> not the prettiest impl, but it works

16:29 <ehawkvu> https://github.com/ehawkvu/kiss.el/commit/894668edeaf74e081757469fb14050670108cbcf#diff-25f0eed012ed0b08c24eb27f87a3bfe69d67e67f1689b8a2b7ffb28638161adeR152

16:33 <ehawkvu> phoebos: how is bliss coming along?

19:02 <phoebos> ehawkvu: I've been preoccupied so haven't worked on it for a few weeks.

19:16 <illiliti> /etc/passwd is not portable either

19:26 <illiliti> see nss if you wonder why

19:26 <illiliti> strictly speaking there is no simple portable way

19:27 <illiliti> that's something posix need to fix actually

19:29 <ehawkvu> On the upside, the 3 systems that I care about (linux, freebsd, and openbsd) all have the same /etc/passwd format

19:30 <ehawkvu> I'm surprised that it isn't standard as of yet

19:30 <ehawkvu> (the way to retrieve the info, not /etc/passwd)

19:33 <illiliti> all these systems support nss in more-or-less way, so /etc/passwd won't work

19:40 <illiliti> ... no matter which format it has. I would rather use non-portable getent utility than deal with this tbh

19:40 <illiliti> because getent is guaranteed to work. parsing /etc/passwd by hand - never

19:41 <midfavila`> can also just target unix systems specifically instead of posix autism

19:42 <illiliti> unix systems support nss since ages

19:42 <illiliti> and/or nscd

19:56 <illiliti> i'm gonna investigate what options would be suitable for posix standardization

19:56 <illiliti> the first obvious option is id -un <id>, but I afraid we lost it since its behavior varies between implementations. some of them always expect username(as standard says), so mandating that id should be supported would be breaking change

20:14 <illiliti> i believe that simplest option would adding a new flag to id to treat username as uid.

20:16 <illiliti> that would allow implementations to implement new behavior while not breaking current

20:17 <illiliti> but another flag means another decade to actually become portable

20:35 <sad_plan> hi