From https://ja.wikipedia.org/wiki/Charlie_Root_%28%E3%82%AA%E3%83%9A%E3%83%AC%E3%83%BC%E3%83%86%E3%82%A3%E3%83%B3%E3%82%B0%E3%82%B7%E3%82%B9%E3%83%86%E3%83%A0%29#%22Charlie_Root%22_%E3%81%A8%E3%81%AF%E8%AA%B0%EF%BC%9F Charlie Root (Operating System) Source: Free encyclopedia "Wikipedia (Wikipedia)" Move to navigation Move to search Ambiguity avoidance This item describes the operating system. For more information on Major League Baseball players, see Charlie Route . Charlie Root is, BSD-based operating system of the administrator user (→ super user , which is an initial set value of). table of contents 1 Basic Specifications 2 implementation 3 questions 3.1 Since when is the administrator "Charlie Root"? 3.2 Who is "Charlie Root"? 3.3 Why is your surname? 4 Summary 5 footnotes 6 Related items Basic specification The user with administrator privileges for UNIX - like operating systems is root . This is because the administrator user sets the root (top layer) directory as the user directory. In addition to user ID and password, GECOS Field exists as a specification of passwd file which records login information of UNIX system . This field [1] has historically contained control information etc. for controlling the GECOS system, but in order to enter information read by humans (acquired by finger) such as full name and telephone number thereafter It is used for → GECOS . As a GECOS Field specification, "&" (ampersand) reflects the user ID. Implementation The administrator user of the BSD operating system is, by default, GECOS Field is Charlie & so '&' (ampersand) is replaced with the administrator ID "root" and the administrator user is automatically Charlie Root. It becomes. The oldest (each version 1.0) code of FreeBSD and NetBSD is available, and its contents can be checked from the CVS repository. [2] [3] [4] Both FreeBSD and NetBSD are derivatives of 386BSDpatchkit (OpenBSD is derived from NetBSD), so the same files are imported. (Excerpt below) root :: 0 : 10 :: 0 : 0 : Charlie &: / root : / bin / csh dmr : * : 10 : 31 :: 0 : 0 : Dennis Ritchie : / usr / guest / dmr : ken : * : 11 : 31 :: 0 : 0 : & Thompson : / usr / guest / ken : bill :: 12 : 10 :: 0 : 0 : & Jolitz : / usr/ bill : / bin / csh lynne :: 14 : 10 :: 0 : 0 : & Jolitz : / usr / lynne : / bin / csh The administrator user GECOS Field is "Charlie &" , and the user names of Dennis Richie , Ken Thompson , Bill Joritz , and Lynn Joritz are all in the form of "First Name" and "Last Name" in GECOS Field of each UID It can confirm that it is filled in with. In other words, it can be seen that the root of the administrator user is treated as a surname . Question Since when is the administrator "Charlie Root" It is before 386 BSD Patchkit, but 4.2 BSD is the same. [Five] Who is "Charlie Root"? There is Charlie Root who is a baseball pitcher of the US major league . He has won 201 wins between 1926 and 1941 when he was registered as a player , and has achieved excellent results. However, he was a retired player about 50 years ago from the 1990s when BSD was being developed, and he was enrolled at the Chicago Cubs , located in the Midwest Illinois team. On the other hand, the University of California at Berkeley , where BSD is being developed , is located in Western California, and it is unlikely that Bill Joritz would have been a good cubs. The /usr/bin/calendar/calendars/calendar.freebsd of FreeBSD is filled with the birthday of Charlie Root [6] (June 19, 1993), but this is the day the name of FreeBSD was proposed. [7] and calendar.freebsd rev = 1.36 [8]Since the name of the FreeBSD project start date has been changed to rev = 1.39, there is no direct relationship with Charlie Root as a person. Why a surname? When GECOS Field is filled with & , Charlie seems to have been added because there was a rule to put a surname and a first name there, but it should have been a first name instead of a last name. However, the above-mentioned Charlie Root , including Mr., people with Root in the last name but is present, people with the name might be for less. According to the results of the US Census (1990), [9] , the Root surname is 1834 (Reference: 1st place is the Smith surname), but there is no one whose name is Root . In BSD -like operating systems, the general user uses / bin / sh , while the administrator user is initially set to use / bin / csh . In the sense of "people who use csh", it is possible that they assigned Charlie , the phonetic code of the first letter C of c sh . It may be something that joked there and was treated as "Root clan". Summary The reason why the administrator ID of the BSD OS is Charlie Root is one of the biggest mysteries in BSD history, and it is an unsolved problem. As a result of the survey, it is thought that two baseball players Charlie Root theory and phonetic code theory are influential, but since both lack critical evidence, in order to grasp the exact meaning, the testimony of the people concerned in the future You have to wait. According to the comment [10] of Remko Lodder , a member of the Security Project of the FreeBSD Project and the Commercial Gallery Editor, the answer "I don't know. You know Kirk ( Marshall Kirk McCusick ) is not it? :-)" Met. Footnote ^ Linux manpage (passwd): Sometimes called GCOS , this was changed when GE's Systems Division was sold to Honeywell ^ FreeBSD 1.0 /etc/master.passwd ^ NetBSD 1.0 /etc/master.passwd ^ OpenBSD initial /etc/master.passwd ^ " 4.2BSD of the / etc / passwd file (Filesystem Dump)". 4.2BSD . The Unix Heritage Society. 2 May 7, 2010 View. “Root :: 0: 10: Charlie &: /: / bin / csh” ^ FreeBSD calendar.freebsd rev = 1.39 ^ Suggested name for FreeBSD ^ FreeBSD calendar.freebsd rev = 1.36 ^ US Name Ranking Search ^ FreeBSD-Advocacy mailing list Related item tcsh t South Ryukyu Islands Time Category :BSDComputer culture Guidance menu You are not logged inTalkPost recordAccount creationLoginpageNoteBrowseEditHistory displaySearch Wikipedia内を検索 Main page Community portal Recent happenings New page Recent updates Random display Practice page Upload (Wikimedia Commons) help help Well end Notice Bug report Donation Inquiry about Wikipedia tool Link source Related page update status Upload file Special page Fixed link to this version Page information Wiki data item Quote this page Print / Export Create a new book Download as PDF Print version language Add link Last updated on Monday, September 10, 2018 05: 19 (Date and time are UTC if not set in personal settings ). 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