Hello,
I am trying to use wall command from with in the snap to broadcast message to all active terminal users on some event, unfortunately I am not able to access the tty . Can any one throw some light on what needs to be done to fix the problem ?
Here is the logs and error message .
$ sudo service-x.wall --help
Usage:
wall [options] [<file> | <message>]
Write a message to all users.
Options:
-n, --nobanner do not print banner, works only for root
-t, --timeout <timeout> write timeout in seconds
-h, --help display this help and exit
-V, --version output version information and exit
For more details see wall(1).
$ sudo service-x.wall "Namaskara"
wall: cannot get tty name: Success
Apparmor logs
= AppArmor =
Time: Jul 19 14:50:32
Log: apparmor="DENIED" operation="open" profile="snap.service-x.wall" name="/run/utmp" pid=10055 comm="wall" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
File: /run/utmp (read)
Suggestions:
* adjust program to use $SNAP_DATA
* adjust program to use /run/shm/snap.$SNAP_NAME.*
Additional info
$ snap version
snap 2.33.1
snapd 2.33.1
series 16
kernel 4.4.0-122-generic