Обложка книги Rn (Newsreader)

Rn (Newsreader)

ISBN: 978-6-1320-0494-9;

) written by Larry Wall and originally released in 1984. It was one of the first newsreaders to take full advantage of character-addressable CRT terminals (vnews, by Kenneth Almquist was first). Previous newsreaders, such as readnews, were mostly line-oriented and designed for use on the printing terminals which were common on the early Unix minicomputers where the Usenet software and network originated. Later variants of the original rn program included rrn, trn, and strn. rn was also notable for three other features it introduced: KILL files, "do the right thing", and automatic configuration. The KILL file was a file (called, obviously enough, KILL) containing regular expressions matched against the subjects of news articles in each group; if an article matched, it would be marked as having already been read.

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