[R] unix

[Peter Dalgaard BSA]

Meriema Belaidouni <meriema at info.univ-angers.fr> writes:

> ls
> cd ..
> 
> In matlab this possible by adding "!"
> !ls
> !cd ..

Use system("ls"). We've had the "!" convention at some point, but as I
remember it, people got tired of having it kick in unexpectedly where
logical "not" was intended, and we decided that it was probably a bad
idea to have a syntactically correct R expression do something
completely different when it happened to sit at the beginning of a line...

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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