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. -- 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
