[vcf-midatlantic] Inventor of Unix Chroot?

Evan Koblentz evan at vcfed.org
Tue Sep 19 02:29:20 EDT 2017

Help me with a research thingamajig.

I want to find out who made Chroot.

Wikipedia -- purely as a starting point -- shows a comment in the Chroot 
talk page stating, "This system call was present [in] AT&T versions of 
Unix well before 1982. This citation should be changed to point to an 
AT&T version. Indeed, Research's UNIX V7 sources (usr/sys/sys/sysent.c 
dated May 7th, 1979) has an entry at position 61 for chroot(2); the fact 
is even noted under the article about V7..."


I know many of you are old-school Unix users/developers and some of you 
worked at AT&T.

Who can help me find out which specific people (I need names) actually 
invented Chroot?

Evan Koblentz, director
Vintage Computer Federation
a 501(c)(3) educational non-profit

evan at vcfed.org
(646) 546-9999


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