mkdir in .zip

although the directory would not actually shown in the file list...
Unused variable
I know unless + else looks terrible but still it's better putting the .zip case latter...
DRY ls
delete from .zip
trash in zip  =>  delete
"Are your" sure that you spell correctly?
Ugly hack aiming #touch in a .zip file not to create an unneeded temporary file
rename in .zip
mv in .zip
Another dirty hack-ish attempt to pretend copying a file inside a .zip file