instead of an error message about the missing argument
reaper# kvmadm import
Use of uninitialized value $fileName in open at /opt/bin/kvmadm line 122.
Use of uninitialized value $fileName in concatenation (.) or string at /opt/bin/kvmadm line 122.
ERROR: open file :No such file or directory
zsh: exit 2 kvmadm import
instead of an error message about the missing argument