neo@netkiller:~/workspace/cvs/project_name$ cvs update -r 1.2 file
U file
neo@netkiller:~/workspace/cvs/project_name$ cvs st file
===================================================================
File: file              Status: Up-to-date

   Working revision:  1.2
   Repository revision: 1.2     /home/cvsroot/project_name/file,v
   Commit Identifier: 4iRs5fm1g9diTPrt
   Sticky Tag:        1.2
   Sticky Date:       (none)
   Sticky Options:    (none)
		

last version

neo@netkiller:~/workspace/cvs/project_name$ cvs update -r HEAD file
U file
neo@netkiller:~/workspace/cvs/project_name$ cvs st file
===================================================================
File: file              Status: Up-to-date

   Working revision:  1.4
   Repository revision: 1.4     /home/cvsroot/project_name/file,v
   Commit Identifier: V0iuptfP43iETPrt
   Sticky Tag:        HEAD (revision: 1.4)
   Sticky Date:       (none)
   Sticky Options:    (none)