<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^job$ http://site.org/jobs [R=301,L]
</IfModule>
http://site.org/job
на http://site.org/jobs
так чтобы страницы вида http://site.org/job/xxxxx
открывались по старому адресу. RewriteRule ^job/$ http://site.org/jobs/ [R=301,L]
RewriteRule job/$ http://site.org/jobs/ [R=301,L]
RewriteRule ^job$ http://site.org/jobs/ [R=301,L]
RewriteRule +.job/$ http://site.org/jobs/ [R=301,L]