Use ls -l -d dir (-d will make it stop listing the contents of a directory). From the documentation:
-d, --directory
List just the names of directories, as with other types of files, rather
than listing their contents. Do not follow symbolic links listed on the
command line unless the --dereference-command-line (-H),
--dereference (-L), or --dereference-command-line-symlink-to-dir
options are specified.
Short version:
rm *\([1-9]\)*
Do not pipe ls to xargs. Instead, pipe find ... -print0 to xargs -0, in order to avoid such problems.
find . -maxdepth 1 -name '*([1-9])*' -print0 | xargs -0 rm
...which can be written as:
find . -maxdepth 1 -name '*([1-9])*' -exec rm {} \;
and:
find . -maxdepth 1 -name '*([1-9])*' -delete
which can further be shortened to just rm with a wildcard.
Normally, ls and find separate file names with newlines, but xargs splits its input by newline or space, resulting in the behavior you see.
It's possible tell xargs to split only by newline, but files can have newlines in their names too. In fact, on Linux and BSD, the only disallowed character is the "null" or zero byte – so it's what you should use in such cases.
In example 2 above, -print0 tells find to separate filenames with a null byte; same for xargs -0. (A few other tools also have similar options, such as sort -z or grep -zZ.)
The "short version" uses a simple shell wildcard ("pattern" in bash manual – see section "Pathname Expansion").
Best Answer
In bash: