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GNU Linux:
if find "$dir" -prune -empty | grep -q .
then
echo "$dir is empty"
fi

CNT=`ls $dir/* | wc -l`
if [ $CNT -eq 0 ]; then
echo "There are no files in the dir"
else
echo "There are files in the dir"

The reason that code doesn't complain about too many arguments is because it does absolutely nothing at all, it doesn't run find, it doesn't expand *, nothing, nada, zip. *.* is a DOS thing by the...

if [ `ls | wc -l` -gt 0 ]

Please search. There are various threads stating similar topic.

e.g. the one I found is here (https://www.unix.com/shell-programming-scripting/111106-check-empty-directory.html)

I don't think there is any error message. The first post states that find-xargs is used to avoid it and that the problem is preventing a descent into subdirectories.

I think this is a case of a...

But with find | xargs it's not the shell.
Either xargs does not know the system limit or mv has a smaller limit than the system.
A work around is
xargs -n 50 ...providing at maximum 50 arguments...

Minor nit: The parentheses are redundant.

More importantly, the solution is incorrect. If ../<<Your Directory>> itself contains a directory named <<Your Directory>>, it will not be pruned since...

The shell can hold a maximum of 131072 bytes for command line arguments. If you try to pass more than that number you will greeted with an error that read as follows:
Argument list too long...

You can do
with GNU find
find "directory1" -maxdepth 1 -type f | xargs -i mv {} "directory2"or with Unix find
find "directory1" \! -name "directory1" -prune -type f | xargs -i mv {}...

If I understand you correctly, you want to move files in directory1 but not in sub directories into directory2?
for i in directory1/* ; do if [ -f $i ] ; then mv $i directory2/ ; fi; done

-maxdepth may not work sometime.. you can try this alternate way


find ../<<Your Directory>> \( ! -name <<Your Directory>> -prune \) -type f | xargs -i mv {} "directory2"