package: mksh version: 54-2+b4 When running a command from the shell that isn't found mksh will spam the terminal with a return code.
The configuration setup for this is when the users default login shell is set to /bin/mksh in which case the .mkshrc is copied over from /etc/skel/.mkshrc into the users home directory. This will give an output like this: root@debian:~ # sl mksh: sl: not found 127|root@debian:~ # Note the bottom line that should just be: root@debian:~ #
