Print instructions for setting the default PAGER

packages/mandb.rb

@@ -4,7 +4,7 @@ class Mandb < Package
   version '2.7.6'
   source_url 'https://download.savannah.gnu.org/releases/man-db/man-db-2.7.6.tar.xz'
   source_sha1 '35a10f80d5cf6411d5c73376fcddcec1539e788a'
-  
+
   def self.build
     system './configure',
       '--with-systemdtmpfilesdir=/usr/local/lib/tmpfiles.d',  # we can't write to /usr/lib/tmpfiles.d
@@ -12,9 +12,12 @@ class Mandb < Package
       '--with-pager=/usr/local/bin/less'                      # the pager is not at the default location
     system 'make'
   end
-  
+
   def self.install
     system 'make', 'install'
+    puts ""
+    puts "You will have to change the default PAGER env variable to be able to use mandb:"
+    puts "echo \"export PAGER=/usr/local/bin/less\" >> ~/.bashrc && . ~/.bashrc"
   end
 
   depends_on 'libpipeline'