Re: [TUHS] basic tools / Universal Unix - TUHS

18 Oct 2017

...
        sed *n l pathname

   The latter also has the advantage that its output is 
...
    unambiguous, whereas the output of historical cat
*etv is not.

 But mind you, in preparation of this email i found a bug in
 Busybox sed(1) which simply echoes nothing for the above. 
I assume that * is a typo for - . If so, sed did just what
-n tells it to--no printing except as called for by p or P.

And speaking of sed anticipating other tools, the inclusion
of "head" in v7 as a complement to "tail" was a close call
because head is subsumed by sed q.

Doug