-if [ ! -f copy/images/known-1 -o \
- ! -f copy/images/known-3 -o \
- ! -f copy/images/known-5 -o \
- ! -L copy/images/abssymlink -o \
- -f copy/known-1 -o \
- -f known-1 ]; then
+if test ! -f copy/images/known-1 || \
+ test ! -f copy/images/known-3 || \
+ test ! -f copy/images/known-5 || \
+ test ! -L copy/images/abssymlink || \
+ test -f copy/known-1 || \
+ test -f known-1
+then