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Null device
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==History== {{mono|/dev/null}} is described as an empty regular file in [[Version 4 Unix]].<ref>{{cite book |last1=Thompson |first1=K. |last2=Ritchie |first2=D. M. |author-link1=Ken Thompson |author-link2=Dennis Ritchie |date=November 1973 |title=UNIX Programmer's Manual, Fourth Edition |url=http://ftp.okass.net/pub/mirror/minnie.tuhs.org/Distributions/Research/Dennis_v4/v4man.tar.gz |publisher=Bell Telephone Laboratories, Inc. |no-pp=yes |page=sh (I) (./man1/sh.1)}} [//minnie.tuhs.org/cgi-bin/utree.pl?file=V4/man/man1/sh.1 Online at TUHS.]</ref> The [[Version 5 Unix]] manual describes a {{mono|/dev/null}} device with modern semantics.<ref>{{cite book |last1=Thompson |first1=K. |last2=Ritchie |first2=D. M. |author-link1=Ken Thompson |author-link2=Dennis Ritchie |date=June 1974 |title=UNIX Programmer's Manual, Fifth Edition |url=http://ftp.okass.net/pub/mirror/minnie.tuhs.org/Distributions/Research/Dennis_v5/v5man.pdf#page=218 |publisher=Bell Telephone Laboratories, Incorporated |no-pp=yes |page=mem (IV)}}</ref>
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