usage: 
	cdb() { cd $(cdbm - $1); }
	cdb
  
example:

	framstag@fex:~: cdb
	[+] add bookmark
	[-] del bookmark
	[>] move bookmark
	[1] /sw/share/fstools-0.0/bin
	[2] /sw/share/jedlib-0.99-18/lib
	[b] /data/backup/diaspora/export/home/framstag
	[b]
	framstag@fex:/data/backup/diaspora/export/home/framstag: