UNIX Third Edition - Revision history

Jnc: Mention archaeology without kernel source

2023-10-20T01:58:51Z

Mention archaeology without kernel source

← Older revision		Revision as of 01:58, 20 October 2023
Line 10:		Line 10:
	}}		}}

	'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].		'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]]. The [[source code]] for the [[kernel]] has been completely lost, so it is not possible to make authoritative, detailed, statements about it; but documentation, and source for some commands still exists, which allows technological archaeologists to draw some conclusions about it.

	V3 seems to have run on the [[PDP-11/45]] model of the PDP-11: "it depends on what hardware is present ([[KE11-A Extended Arithmetic Element\|EAE]], [[FP11-B Floating-Point Processor\|floating-point option]])". ([http://squoze.net/UNIX/v3man/man5/core core(V)]) The "floating-point option" would only have been on the -11/45.		V3 seems to have run on the [[PDP-11/45]] model of the PDP-11: "it depends on what hardware is present ([[KE11-A Extended Arithmetic Element\|EAE]], [[FP11-B Floating-Point Processor\|floating-point option]])". ([http://squoze.net/UNIX/v3man/man5/core core(V)]) The "floating-point option" would only have been on the -11/45.
Line 16:		Line 16:
	(And we thus see that V3 still ran on [[PDP-11/20]] model of the PDP-11; the -11/45 would not have had an EAE, since all the EAE operations - except [[normalization]], but that's only needed for [[floating-point]] - were in the basic -11/45. Whether the -11/20 was still supported without the [[KS11 Memory Protection and Relocation option\|KS11]] is unknown; as late as V3, there were apparently still UNIX machines without [[memory management]] hardware: "The purpose of this command is to simplify the preparation of object programs for systems which have no relocation hardware." ([http://squoze.net/UNIX/v3man/man1/reloc reloc (I)])		(And we thus see that V3 still ran on [[PDP-11/20]] model of the PDP-11; the -11/45 would not have had an EAE, since all the EAE operations - except [[normalization]], but that's only needed for [[floating-point]] - were in the basic -11/45. Whether the -11/20 was still supported without the [[KS11 Memory Protection and Relocation option\|KS11]] is unknown; as late as V3, there were apparently still UNIX machines without [[memory management]] hardware: "The purpose of this command is to simplify the preparation of object programs for systems which have no relocation hardware." ([http://squoze.net/UNIX/v3man/man1/reloc reloc (I)])

	Probably the protection and relocation provided to UNIX processes on the 11/45 under V3 were very similar to that provided with the KS11, although the memory management mechanisms were more limited than those that came in with [[UNIX Fourth Edition]]: "In the future the text segment will be write-protected and shared." ([http://squoze.net/UNIX/v3man/man5/a.out a.out (V)])		Probably the protection and relocation provided to UNIX processes on the -11/45 under V3 were very similar to that provided with the KS11, although the memory management mechanisms were more limited than those that came in with [[UNIX Fourth Edition]]: "In the future the text segment will be write-protected and shared." ([http://squoze.net/UNIX/v3man/man5/a.out a.out (V)])

	However, it was keeping multiple processes in main memory at the same time: "only processes whose core images are on disk have visible names". ([http://squoze.net/UNIX/v3man/man8/ps ps (~~III~~)])		However, it was keeping multiple processes in main memory at the same time: "only processes whose core images are on disk have visible names". ([http://squoze.net/UNIX/v3man/man8/ps ps (VIII)])

	The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences from the latter being that i) the free blocks are stored as a bit [[array]], rather than a linked [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).		The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences from the latter being that i) the free blocks are stored as a bit [[array]], rather than a linked [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).
Line 24:		Line 24:
	==Source==		==Source==

	A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).		As mentioned, a complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).

	The 'cmd' directory at TUHS allegedly for [[UNIX Second Edition\|V2]] (below) actually seems to be for V3.		The 'cmd' directory at TUHS allegedly for [[UNIX Second Edition\|V2]] (below) actually seems to be for V3.

Jnc: /* External links */ +TUHS wiki link

2023-10-18T18:52:46Z

External links: +TUHS wiki link

← Older revision		Revision as of 18:52, 18 October 2023
Line 32:		Line 32:
	* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3] - file tree at TUHS		* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3] - file tree at TUHS
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V2/cmd cmd] - not really V2, as it claims		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V2/cmd cmd] - not really V2, as it claims
			** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]
			** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]
	* [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff 1972 stuff] - the source for the above		* [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff 1972 stuff] - the source for the above
	** [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff/Readme Readme] - a discussion of what's there		** [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff/Readme Readme] - a discussion of what's there
	** [https://~~minnie~~.tuhs.org/~~cgi-bin/utree~~.pl?~~file~~=~~V3/man/man0/intro UNIX Programmer's Manual~~ Third Edition ~~- Introduction]~~		* [https://wiki.tuhs.org/doku.php?id=systems:3rd_edition Third Edition Unix]
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]
	* [http://squoze.net/UNIX/v3man/ UNIX Programmer's manual: Third Edition]		* [http://squoze.net/UNIX/v3man/ UNIX Programmer's manual: Third Edition]

Jnc: Add my archaeology

2023-10-18T17:40:19Z

Add my archaeology

← Older revision		Revision as of 17:40, 18 October 2023
Line 12:		Line 12:
	'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].		'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].

	~~It ran~~ on ~~the~~ the [[PDP-11/45]], ~~but~~ the [[PDP-11/20]] model of the PDP-11 was ~~apparently~~ still supported ~~(whether~~ without the [[KS11 Memory Protection and Relocation option\|KS11]] is unknown~~). The~~ [[memory management]] mechanisms were more limited than those that came in with [[UNIX Fourth Edition]]~~. (~~"In the future the text segment will be write-protected and shared." ([http://squoze.net/UNIX/v3man/man5/a.out a.out (V)])).		V3 seems to have run on the [[PDP-11/45]] model of the PDP-11: "it depends on what hardware is present ([[KE11-A Extended Arithmetic Element\|EAE]], [[FP11-B Floating-Point Processor\|floating-point option]])". ([http://squoze.net/UNIX/v3man/man5/core core(V)]) The "floating-point option" would only have been on the -11/45.

			(And we thus see that V3 still ran on [[PDP-11/20]] model of the PDP-11; the -11/45 would not have had an EAE, since all the EAE operations - except [[normalization]], but that's only needed for [[floating-point]] - were in the basic -11/45. Whether the -11/20 was still supported without the [[KS11 Memory Protection and Relocation option\|KS11]] is unknown; as late as V3, there were apparently still UNIX machines without [[memory management]] hardware: "The purpose of this command is to simplify the preparation of object programs for systems which have no relocation hardware." ([http://squoze.net/UNIX/v3man/man1/reloc reloc (I)])

			Probably the protection and relocation provided to UNIX processes on the 11/45 under V3 were very similar to that provided with the KS11, although the memory management mechanisms were more limited than those that came in with [[UNIX Fourth Edition]]: "In the future the text segment will be write-protected and shared." ([http://squoze.net/UNIX/v3man/man5/a.out a.out (V)])

			However, it was keeping multiple processes in main memory at the same time: "only processes whose core images are on disk have visible names". ([http://squoze.net/UNIX/v3man/man8/ps ps (III)])

	The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences from the latter being that i) the free blocks are stored as a bit [[array]], rather than a linked [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).		The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences from the latter being that i) the free blocks are stored as a bit [[array]], rather than a linked [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).

			==Source==

	A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).		A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).

			The 'cmd' directory at TUHS allegedly for [[UNIX Second Edition\|V2]] (below) actually seems to be for V3.

	==External links==		==External links==

	* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3] - file tree at TUHS		* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3] - file tree at TUHS
			** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V2/cmd cmd] - not really V2, as it claims
			* [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff 1972 stuff] - the source for the above
			** [https://www.tuhs.org/Archive/Distributions/Research/1972_stuff/Readme Readme] - a discussion of what's there
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]

Jnc: V3 had simpler mem mgmt than V4

2023-05-18T05:11:42Z

V3 had simpler mem mgmt than V4

← Older revision		Revision as of 05:11, 18 May 2023
Line 12:		Line 12:
	'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].		'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].

	It ~~still~~ ran on the [[PDP-11/20]] model of the PDP-11~~, as well as~~ the [[~~PDP-11/45~~]] ~~(apparently~~). The [[~~file system~~]] ~~apparently identical to the one~~ in [[UNIX ~~Second~~ Edition]]~~; i~~.e. ~~almost identical to the [~~[UNIX ~~file system\|V6 one]]: the only major differences being that i) the free blocks are stored as~~ a ~~bit [[array]], rather than~~ a ~~[[list~~]~~], and ii~~) ~~[[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later~~).		It ran on the the [[PDP-11/45]], but the [[PDP-11/20]] model of the PDP-11 was apparently still supported (whether without the [[KS11 Memory Protection and Relocation option\|KS11]] is unknown). The [[memory management]] mechanisms were more limited than those that came in with [[UNIX Fourth Edition]]. ("In the future the text segment will be write-protected and shared." ([http://squoze.net/UNIX/v3man/man5/a.out a.out (V)])).

	A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).		The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences from the latter being that i) the free blocks are stored as a bit [[array]], rather than a linked [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).

			A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).

	==External links==		==External links==

Jnc: forgot

2022-06-23T04:16:58Z

forgot

← Older revision		Revision as of 04:16, 23 June 2022
Line 5:		Line 5:
	\| previous version = [[UNIX Second Edition\|V2]]		\| previous version = [[UNIX Second Edition\|V2]]
	\| current version = V3		\| current version = V3
	\| next version = [[UNIX Fourth Edition]]		\| next version = [[UNIX Fourth Edition\|V4]]
	\| type = [[Multi-tasking]], [[multi-user]]		\| type = [[Multi-tasking]], [[multi-user]]
	\| architecture = [[PDP-11 architecture\|PDP-11]]		\| architecture = [[PDP-11 architecture\|PDP-11]]

Jnc: +previous version

2022-06-23T04:16:23Z

+previous version

← Older revision		Revision as of 04:16, 23 June 2022
Line 3:		Line 3:
	\| creator = AT&T/[[Western Electric]]		\| creator = AT&T/[[Western Electric]]
	\| year introduced = February, 1973		\| year introduced = February, 1973
			\| previous version = [[UNIX Second Edition\|V2]]
			\| current version = V3
	\| next version = [[UNIX Fourth Edition]]		\| next version = [[UNIX Fourth Edition]]
	\| type = [[Multi-tasking]], [[multi-user]]		\| type = [[Multi-tasking]], [[multi-user]]
Line 16:		Line 18:
	==External links==		==External links==

	* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3]		* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3] - file tree at TUHS
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]

Jnc: +Next Version

2022-05-25T09:14:25Z

+Next Version

← Older revision		Revision as of 09:14, 25 May 2022
Line 3:		Line 3:
	\| creator = AT&T/[[Western Electric]]		\| creator = AT&T/[[Western Electric]]
	\| year introduced = February, 1973		\| year introduced = February, 1973
			\| next version = [[UNIX Fourth Edition]]
	\| type = [[Multi-tasking]], [[multi-user]]		\| type = [[Multi-tasking]], [[multi-user]]
	\| architecture = [[PDP-11 architecture\|PDP-11]]		\| architecture = [[PDP-11 architecture\|PDP-11]]

Jnc: Same FS as V2

2022-05-25T00:49:18Z

Same FS as V2

← Older revision		Revision as of 00:49, 25 May 2022
Line 9:		Line 9:
	'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].		'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].

	It still ran on the [[PDP-11/20]] model of the PDP-11, as well as the [[PDP-11/45]] (apparently). The [[file system]] is almost identical to the [[UNIX file system\|V6 one]]; the only major differences ~~are~~ that i) the free blocks are stored as a bit [[array]], rather than a [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).		It still ran on the [[PDP-11/20]] model of the PDP-11, as well as the [[PDP-11/45]] (apparently). The [[file system]] apparently identical to the one in [[UNIX Second Edition]]; i.e. almost identical to the [[UNIX file system\|V6 one]]: the only major differences being that i) the free blocks are stored as a bit [[array]], rather than a [[list]], and ii) [[peripheral\|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).

	A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).		A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society\|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language\|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).
Line 17:		Line 17:
	* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3]		* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3]
	** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]
	*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]		** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]
	*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/manx/obproc.7 Boot procedures] - possibly obsolete?		* [http://squoze.net/UNIX/v3man/ UNIX Programmer's manual: Third Edition]
	* [http://squoze.net/UNIX/v3man/ UNIX Programmer's manual]

	{{Nav Unix}}		{{Nav Unix}}

Aap: added link to manual

2022-05-24T21:42:27Z

added link to manual

← Older revision		Revision as of 21:42, 24 May 2022
Line 19:		Line 19:
	*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]		*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]
	*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/manx/obproc.7 Boot procedures] - possibly obsolete?		*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/manx/obproc.7 Boot procedures] - possibly obsolete?
			* [http://squoze.net/UNIX/v3man/ UNIX Programmer's manual]

	{{Nav Unix}}		{{Nav Unix}}

Jnc: A start - at least there's a date, and key changes

2022-05-24T20:47:09Z

A start - at least there's a date, and key changes

New page

{{Infobox OS
| name = Unix V3
| creator = AT&T/[[Western Electric]]
| year introduced = February, 1973
| type = [[Multi-tasking]], [[multi-user]]
| architecture = [[PDP-11 architecture|PDP-11]]
}}

'''UNIX Third Edition''' (often referred to as '''UNIX V3''' or '''V3 UNIX''' - 'Unix' was still normally given in all capital letters at this point in time) was a significant early version of [[UNIX]]. It was the version in which [[pipe]]s appeared, and the last version in which the [[kernel]] was written in [[assembly language]].

It still ran on the [[PDP-11/20]] model of the PDP-11, as well as the [[PDP-11/45]] (apparently). The [[file system]] is almost identical to the [[UNIX file system|V6 one]]; the only major differences are that i) the free blocks are stored as a bit [[array]], rather than a [[list]], and ii) [[peripheral|device]] 'special files' are indicated by [[inode]] numbers below 41. (not via a flag in the 'mode' word in the inode, as later).

A complete copy of Third Edition does not seem to be extant. [[The Unix Heritage Society|TUHS]] has a copy of the 'UNIX Programmer's Manual Third Edition', and the [[source code]] for an early version of the first [[C programming language|C]] [[compiler]] (C was just being defined at the point in time, although it first appeared in [[UNIX Second Edition]]).

==External links==

* [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3 V3]
** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man0/intro UNIX Programmer's Manual Third Edition - Introduction]
*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man5/fs.5 File system]
*** [https://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/manx/obproc.7 Boot procedures] - possibly obsolete?

{{Nav Unix}}

[[Category: PDP-11 Operating Systems]]
[[Category: Non-DEC Operating Systems]]
[[Category: Unix OS's]]