linux rc est l'abréviation de runcom, et c'est aussi le rc qui apparaît dans ".cshrc" ou "/etc/rc" ; rc vient de runcom, qui est apparu pour la première fois dans le système MIT CTSS en 1965 ; le système en cours d'exécution plusieurs commandes stockées dans des fichiers sont appelées runcom, qui est l'abréviation de commandes d'exécution.
L'environnement d'exploitation de ce tutoriel : système Linux5.9.8, ordinateur Dell G3.
linux rc Qu'est-ce que cela signifie ?
Linux rc plein sens
Cela commence à l'ère préhistorique du système Unix (1961-1969). Au début, le MIT était la principale force dans le développement d'un système compatible. système de partage de temps (Compatible Time-Sharing System), appelé CTSS.
(Bien que les fonctions de ce CTSS ne soient pas aussi bonnes que celles des systèmes Unix ultérieurs, elles sont de plus en plus anciennes.)
Il existe une fonctionnalité sur les scripts de commande dans le système CTSS appelée runcom. runcom。
为了致敬这个古早版本Unix系统——CTSS的runcom特性，后来的Unix系统中就用rc作为操作系统的启动文件名。
Tips
程序语言里的Date是从1970-01-01开始的，
而前面提到的Unix的史前时代(1961-1969)还在1970年之前。
也可以侧面感受到CTSS这个系统的“辈分”之大。
rc = RunCom
“rc” 是取自 “runcom”, 来自麻省理工学院在 1965 年发展的 CTSS系统。相关文献曾记载这一段话：“具有从档案中取出一系列命令来执行的功能；这称为 run commands 又称为 “runcom”，而这种档案又称为一个 runcom (a runcom)。”
.bashrc bash的运行命令.vimrc vim的运行命令.npmrc npm的运行命令Linux中，文件名以.开头表示为隐藏文件。
leung@wuyujin ~ % ls -al | grep rc$ -rw------- 1 leung staff 33 5 13 20:34 .npmrc -rw-r--r-- 1 leung staff 116 5 13 21:20 .yarnrc -rw-r--r-- 1 leung staff 55 6 2 20:00 .zshrc
What does rc mean in bashr, zshrc, vimrc etc?
翻译如下：
对于rc所代表的意思，你可能会看到以下几种：
在读过这份文档之后，我更愿意认为rc是runcom的缩写。
rc = RunCom 就是.cshrc或/etc/rc中出现的那个rcrc来源于runcom，首次出现于1965年的MIT CTSS系统。
在某些场景中，(我们)会执行被存储在文件中的多条命令commands，我们称之为runcom即运行命令run commands的简称。
另外，这个用于存储命令的文件被称作：a runcom。
Unix文件命名中的rc就是来自于这样的老典故。
— Brian Kernighan & Dennis Ritchie, as told to Vicki Brown
Also ESR states that in Run-Control Files:
当然，你也可以在 Run-Control文件中找到证据：rc后缀一直往前追溯，会发现其实它在Unix的爷爷辈老系统——CTSS里就有了。
而在CTSS这个古早的系统中有一个命令脚本的特性叫做：runcom。
于是早期Unix就开始使用rc作为操作系统启动脚本的文件名，以此来追忆/致敬 CTSS runcom。
所以我认为：rc是runcom Afin de rendre hommage à la fonctionnalité runcom de CTSS, une première version du système Unix, rc a été utilisé comme nom de fichier de démarrage du système d'exploitation dans les systèmes Unix ultérieurs.
Conseils
La date dans le langage de programmation commence à partir du 01/01/1970,
🎜🎜L'ère préhistorique d'Unix (1961-1969) mentionnée plus haut était encore avant 1970. 🎜 On ressent aussi «l'ancienneté» du système CTSS de côté. 🎜rc = RunCom🎜🎜"rc" est tiré de "runcom" , à partir du système CTSS développé au MIT en 1965. La littérature pertinente a déjà enregistré ce paragraphe : « Il a pour fonction de retirer une série de commandes du fichier à exécuter ; cela s'appelle run commands, également appelé "runcom", et ce type de fichier est également appelé runcom (un runcom) ”🎜.bashrc bash exécutant la commande<.> .vimrc Commande d'exécution de Vim.npmrc Commande d'exécution de npm. sont des fichiers cachés. 🎜🎜 🎜1.3) What does {some strange unix command name} stand for?
awk = "Aho Weinberger and Kernighan"
This language was named by its authors, Al Aho, Peter
Weinberger and Brian Kernighan.
grep = "Global Regular Expression Print"
grep comes from the ed command to print all lines matching a
certain pattern
g/re/p
where "re" is a "regular expression".
fgrep = "Fixed GREP".
fgrep searches for fixed strings only. The "f" does not stand
for "fast" - in fact, "fgrep foobar *.c" is usually slower than
"egrep foobar *.c" (Yes, this is kind of surprising. Try it.)
Fgrep still has its uses though, and may be useful when searching
a file for a larger number of strings than egrep can handle.
egrep = "Extended GREP"
egrep uses fancier regular expressions than grep. Many people
use egrep all the time, since it has some more sophisticated
internal algorithms than grep or fgrep, and is usually the
fastest of the three programs.
cat = "CATenate"
catenate is an obscure word meaning "to connect in a series",
which is what the "cat" command does to one or more files. Not
to be confused with C/A/T, the Computer Aided Typesetter.
gecos = "General Electric Comprehensive Operating Supervisor"
When GE's large systems division was sold to Honeywell,
Honeywell dropped the "E" from "GECOS".
Unix's password file has a "pw_gecos" field. The name is a
real holdover from the early days. Dennis Ritchie has reported:
"Sometimes we sent printer output or batch jobs
to the GCOS machine. The gcos field in the password file
was a place to stash the information for the $IDENT card.
Not elegant."
nroff = "New ROFF"
troff = "Typesetter new ROFF"
These are descendants of "roff", which was a re-implementation
of the Multics "runoff" program (a program that you'd use to
"run off" a good copy of a document).
tee = T
From plumbing terminology for a T-shaped pipe splitter.
bss = "Block Started by Symbol"
Dennis Ritchie says:
Actually the acronym (in the sense we took it up; it may
have other credible etymologies) is "Block Started by
Symbol." It was a pseudo-op in FAP (Fortran Assembly [-er?]
Program), an assembler for the IBM 704-709-7090-7094
machines. It defined its label and set aside space for a
given number of words. There was another pseudo-op, BES,
"Block Ended by Symbol" that did the same except that the
label was defined by the last assigned word + 1. (On these
machines Fortran arrays were stored backwards in storage
and were 1-origin.)
The usage is reasonably appropriate, because just as with
standard Unix loaders, the space assigned didn't have to be
punched literally into the object deck but was represented
by a count somewhere.
biff = "BIFF"
This command, which turns on asynchronous mail notification,
was actually named after a dog at Berkeley.
I can confirm the origin of biff, if you're interested.
Biff was Heidi Stettner's dog, back when Heidi (and I, and
Bill Joy) were all grad students at U.C. Berkeley and the
early versions of BSD were being developed. Biff was
popular among the residents of Evans Hall, and was known
for barking at the mailman, hence the name of the command.
Confirmation courtesy of Eric Cooper, Carnegie Mellon University
rc (as in ".cshrc" or "/etc/rc") = "RunCom"
"rc" derives from "runcom", from the MIT CTSS system, ca. 1965.
'There was a facility that would execute a bunch of
commands stored in a file; it was called "runcom" for "run
commands", and the file began to be called "a runcom."
"rc" in Unix is a fossil from that usage.'
Brian Kernighan & Dennis Ritchie, as told to Vicki Brown
"rc" is also the name of the shell from the new Plan 9
operating system.
Perl = "Practical Extraction and Report Language"
Perl = "Pathologically Eclectic Rubbish Lister"
The Perl language is Larry Wall's highly popular
freely-available completely portable text, process, and file
manipulation tool that bridges the gap between shell and C
programming (or between doing it on the command line and
pulling your hair out). For further information, see the
Usenet newsgroup comp.lang.perl.misc.
Don Libes' book "Life with Unix" contains lots more of these
tidbits.🎜🎜Traduit comme suit :🎜 Pour Ce que rc représente, vous pouvez voir ce qui suit : 🎜rc C'est l'abréviation de runcom. 🎜🎜rc = RunCom est le rc qui apparaît dans .cshrc ou /etc/rc🎜 rc vient de runcom, apparu pour la première fois dans le système MIT CTSS en 1965. 🎜🎜Dans certains scénarios, (nous) exécuterons plusieurs commandes commands stockées dans le fichier, que nous appelons runcom, ce qui signifie exécuter la commande run Abréviation de commandes . 🎜 De plus, le fichier utilisé pour stocker les commandes s'appelle : a runcom. 🎜 rc dans la dénomination des fichiers Unix vient de cette vieille allusion. 🎜 — Brian Kernighan et Dennis Ritchie, racontés à Vicki Brown Si l'on remonte le suffixe >rc, vous constaterez qu'il existe réellement dans CTSS, le grand-père des systèmes Unix. 🎜 Dans l'ancien système CTSS, il existe une fonctionnalité de script de commande appelée : runcom. 🎜 Ainsi, au début d'Unix, rc était utilisé comme nom de fichier du script de démarrage du système d'exploitation pour rappeler/rendre hommage à CTSS runcom. 🎜🎜Donc je pense : rc est l'abréviation de runcom. 🎜🎜🎜🎜Unix系统的背景
1961-1969：史前时代
CTSS(Compatible Time-Sharing System，兼容分时系统)，以MIT为首的开发小组，小而简单的实验室原型。
Multics(Multiplexed Information and Computing System，多路信息与计算系统)，庞大而负责，不堪重负。
Unics(Uniplexed information and Computing System，单路信息与计算系统)，返璞归真，走上正道。
1969-1971：创世纪
……
1.3) What does {some strange unix command name} stand for?
awk = "Aho Weinberger and Kernighan"
This language was named by its authors, Al Aho, Peter
Weinberger and Brian Kernighan.
grep = "Global Regular Expression Print"
grep comes from the ed command to print all lines matching a
certain pattern
g/re/p
where "re" is a "regular expression".
fgrep = "Fixed GREP".
fgrep searches for fixed strings only. The "f" does not stand
for "fast" - in fact, "fgrep foobar *.c" is usually slower than
"egrep foobar *.c" (Yes, this is kind of surprising. Try it.)
Fgrep still has its uses though, and may be useful when searching
a file for a larger number of strings than egrep can handle.
egrep = "Extended GREP"
egrep uses fancier regular expressions than grep. Many people
use egrep all the time, since it has some more sophisticated
internal algorithms than grep or fgrep, and is usually the
fastest of the three programs.
cat = "CATenate"
catenate is an obscure word meaning "to connect in a series",
which is what the "cat" command does to one or more files. Not
to be confused with C/A/T, the Computer Aided Typesetter.
gecos = "General Electric Comprehensive Operating Supervisor"
When GE's large systems division was sold to Honeywell,
Honeywell dropped the "E" from "GECOS".
Unix's password file has a "pw_gecos" field. The name is a
real holdover from the early days. Dennis Ritchie has reported:
"Sometimes we sent printer output or batch jobs
to the GCOS machine. The gcos field in the password file
was a place to stash the information for the $IDENT card.
Not elegant."
nroff = "New ROFF"
troff = "Typesetter new ROFF"
These are descendants of "roff", which was a re-implementation
of the Multics "runoff" program (a program that you'd use to
"run off" a good copy of a document).
tee = T
From plumbing terminology for a T-shaped pipe splitter.
bss = "Block Started by Symbol"
Dennis Ritchie says:
Actually the acronym (in the sense we took it up; it may
have other credible etymologies) is "Block Started by
Symbol." It was a pseudo-op in FAP (Fortran Assembly [-er?]
Program), an assembler for the IBM 704-709-7090-7094
machines. It defined its label and set aside space for a
given number of words. There was another pseudo-op, BES,
"Block Ended by Symbol" that did the same except that the
label was defined by the last assigned word + 1. (On these
machines Fortran arrays were stored backwards in storage
and were 1-origin.)
The usage is reasonably appropriate, because just as with
standard Unix loaders, the space assigned didn't have to be
punched literally into the object deck but was represented
by a count somewhere.
biff = "BIFF"
This command, which turns on asynchronous mail notification,
was actually named after a dog at Berkeley.
I can confirm the origin of biff, if you're interested.
Biff was Heidi Stettner's dog, back when Heidi (and I, and
Bill Joy) were all grad students at U.C. Berkeley and the
early versions of BSD were being developed. Biff was
popular among the residents of Evans Hall, and was known
for barking at the mailman, hence the name of the command.
Confirmation courtesy of Eric Cooper, Carnegie Mellon University
rc (as in ".cshrc" or "/etc/rc") = "RunCom"
"rc" derives from "runcom", from the MIT CTSS system, ca. 1965.
'There was a facility that would execute a bunch of
commands stored in a file; it was called "runcom" for "run
commands", and the file began to be called "a runcom."
"rc" in Unix is a fossil from that usage.'
Brian Kernighan & Dennis Ritchie, as told to Vicki Brown
"rc" is also the name of the shell from the new Plan 9
operating system.
Perl = "Practical Extraction and Report Language"
Perl = "Pathologically Eclectic Rubbish Lister"
The Perl language is Larry Wall's highly popular
freely-available completely portable text, process, and file
manipulation tool that bridges the gap between shell and C
programming (or between doing it on the command line and
pulling your hair out). For further information, see the
Usenet newsgroup comp.lang.perl.misc.
Don Libes' book "Life with Unix" contains lots more of these
tidbits.相关推荐：《Linux视频教程》
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