You can use the following extglob pattern:

.@(!(.|))

• . matches a literal . at first




• @() is a extglob pattern, will match one of the patterns inside, as we have only one pattern inside it, it will pick that




• !(.|) is another extglob pattern (nested), which matches any file with no or one .; As we have matched . at start already, this whole pattern will match all files starting with . except . and ...

extglob is enabled on interactive sessions of bash by default in Ubuntu. If not, enable it first:

shopt -s extglob

Example:

$ echo .@(!(.|))

.bar .foo .spam