How do I replace an underscore with a dash using htaccess?

Question

Okay here is my url:

http://example.com/home/process_login

I would like to replace the underscore with a dash.

So http://example.com/h

Answer 1

Use this code:

Options +FollowSymLinks -MultiViews
RewriteEngine on

RewriteRule ^(home/)(.*)-(.*)$ $1$2_$3 [L,NC]

UPDATE: Based on your comments below

Options +FollowSymLinks -MultiViews
RewriteEngine on

RewriteCond %{REQUEST_URI} !^/?(coremeasures/index\.php/|index\.php|home/|images/|robots\.txt)
RewriteRule ^(.*)$ /coremeasures/index.php/$1 [L]
RewriteRule ^(home/)(.*)-(.*)$ $1$2_$3 [L,NC]

UPDATE 2: Based on your comments below

Options +FollowSymLinks -MultiViews
RewriteEngine on

RewriteRule ^(?!(coremeasures/index\.php/|index\.php|home/|images/|robots\.txt))(.*)$ coremeasures/index.php/$1 [L]
RewriteRule ^(home/)(.*)-(.*)$ $1$2_$3 [L,NC]