If you want to redirect from http://example.com/test/ to http://example.com/test (i.e. remove the slash at the end of URLs) then you can use the following .htaccess code:

RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/$ /$1 [R=301,L]

This will 301 redirect to the non trailing slash version of the page

Don't forget that you will probably need to enable the rewrite engine for these rules to work.