tohru:~ $ ls -l
total 8
-rw-r--r--    1 me  staff  1352 Aug 18 14:33 --help
...

rm --help

rm "--help"

rm -- --help

rm ./--help

find . -name '--help' -delete

find . -maxdepth 1 -name '--help' -delete

find . -inode <inode> -exec rm {};

TAB: menu-complete             # Tab: Cycles through the command
"e[Z": menu-complete-backward # Shift-Tab: Cycles backwards

perl -e "unlink '--help' or die 'Could not unlink.';"

perl -e "rmdir '-d' or die 'Could not rmdir.';"

eric@dev ~ $ touch -- "--yo yo"
eric@dev ~ $ ls
bin  --yo yo

eric@dev ~ $ find . -name "*--yo yo*"
./--yo yo

eric@dev ~ $ find . -name "*--yo yo*" -delete
eric@dev ~ $ ls
bin

vim .

$ rm ./-filename.txt dirname/-filename2.txt
$ mv ./-filename.txt filename.txt
$ cp teste ./-teste

cat >foo.bar <-.bar

rm -- -.bar