On 14 November 2016 at 16:31, Jim Patterson <jimp@xxxxxxxxxx> wrote: > The company that I work for has an old terminal application that is > still in use today. This app used to run on AIX boxes but has been > moved to modern Linux based systems. The users on this application > are in groups and under AIX we used the "-g" switch on wall to be able > to send a message to a single group at a time. The wall on Linux does > not offer this option. I will either be adding this option to wall or > writing a custom tool to support sending a message based on the user's > groups. > > Is there any interest in a pull request supporting such an option in > the standard wall? And if so, does anyone have any particular > concerns about implementation details? > > The AIX man page does not describe the implementation details, but > experimenting with the command on an AIX system shows that the the > message is sent to all users that have the specified group in the > primary or supplementary groups. My plan for doing this on a Linux > system is to use the username in the utmp entry to lookup the user's > primary and supplementary groups, then skip the utmp entry if the user > does not have the specified group. > > Thanks in advance, > Jim P > > PS. I'm not subscribed to the group, so please reply to this address also. Hi Jim, Adding -g, --group <groupname|gid> option should be doable. Do you want to write this change or prefer someone else doing the work? Either way I don't mind helping a bit. Reference: http://www.ibm.com/support/knowledgecenter/ssw_aix_61/com.ibm.aix.cmds6/wall.htm p.s. Maintainer is off-line http://marc.info/?l=util-linux-ng&m=147877091818853&w=2 -- Sami Kerola http://www.iki.fi/kerolasa/ -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
