Cmd line with mask is shortened at execution

[Snoopy]

Using special chars like * % / \ & directly on the commandline will mostly result in such behavior as these chars have special meanings on the commandline, in your case the & is for combining two commands and this results in your output

for masks with special chars use a maskfile instead or you have to escape all special chars, maybe its enough to simple enclose them by singel or double quotes but i wont go for that, i would prefer the maskfile approach, see wiki for that