unq
unq [ -t sep ]
unq
reads tokenized lines and convert them to lines with fields separated by the given character.
term% cat a 'Hans Christian Andersen' 'The Little Match Girl' term% unq -s '|' <a Hans Christian Andersen|The Little Match Girl term% unq < a |xd -c 0000000 H a n s C h r i s t i a n A 0000010 n d e r s e n \t T h e L i t t 0000020 l e M a t c h G i r l \n 000002e term%
http://plan9.aichi-u.ac.jp/netlib/cmd/unq/