seen - localbin - leot's localbin (~/bin)
 (HTM) hg clone https://bitbucket.org/iamleot/localbin
 (DIR) Log
 (DIR) Files
 (DIR) Refs
       ---
       seen
       ---
            1 #!/bin/sh
            2 
            3 #
            4 # Remove unseen sequence.
            5 #
            6 
            7 exec mark -sequence unseen -delete "$@"