Some ergonomic changes

bashrc

@@ -119,6 +119,7 @@ alias shm='cd /dev/shm'
 alias ip6='ip -6'
 alias disk-usage-analyser='baobab'
 alias op='xdg-open'
+alias o='octave'
 alias cdu='cdu -idh'
 alias dus='du -sh * | sort -h'
 
@@ -207,6 +208,23 @@ extract()
  return $e
 }
 # }}}
+
+
+## FIXME TO IMPROVE WITH VARIOUS locations (ex: ro 1; ro 2; ro 3)
+ro()
+{ # {{{
+	if [ -n "$my_root_set" ]; then
+		cd $my_root_set;
+	else
+		echo "root not set ! set it with roset !";
+	fi;
+} # }}}
+
+roset()
+{ # {{{
+	my_root_set="`pwd`";
+} # }}}
+
 # }}}
 
 SSHAGENT=/usr/bin/ssh-agent