Am trying a published solution to remove systemd-shim error after upgrade from 16.04 to 18.04 but get a bash syntax error as follows (you can see I tried different permutations of the same command in terminal).
I don't understand why it results in this error.
I guess you are following this instruction.
As I said in comments, <original file name> and <new file name> are only place holders for real file names and you should exchange them with those names.
So the real command is:
sudo mv /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.bk
which you can simplify to:
sudo mv /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service{,.bk}
You get this error message because < is used for redirection. If you quote the arguments to mv with single quotes you get a clearer error message:
$ mv '<original file name>' '<new file name>'
mv: cannot stat ‘<original file name>’: No such file or directory
