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Shell Global
Shell is a global group of energy and petrochemical companies. Learn more about Shell on our global website.
www.shell.com
www.shell.com
Shell USA, Inc.
Discover Shell in the United States: oil and gas in the Gulf of America, biofuels, retail sites and EV charging network, marketing and trading electricity ...
www.shell.us
www.shell.us
Shell Credit Card: Log In or Apply - Citi.com
Manage your Shell credit card account online, any time, using any device. Submit an application for a Shell credit card now.
citiretailservices.citibankonline.com
citiretailservices.citibankonline.com
shell
▪ I. shell, n. (ʃɛl) Forms: 1 sciell, scel(l, scill, scyll, 4 schele, scell, chelle, s(c)hill, (schyl-), 4–5 schelle, schylle, 4–6 schell, shelle, (schel-), 4–7 shel, 5 shylle, schull(e, 7 shul, 9 dial. shill, shull, 4– shell. [OE. sciell, scill, Anglian scell fem. = WFris. skyl peel, rind, egg-shel...
Oxford English Dictionary
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SHELL Definition & Meaning - Merriam-Webster
1. a : a hard rigid usually largely calcareous covering or support of an animal b : the hard or tough often thin outer covering of an egg (as of a bird or ...
www.merriam-webster.com
www.merriam-webster.com
Shell plc - Wikipedia
Shell is the second largest investor-owned oil and gas company in the world by revenue (after ExxonMobil), and among the world's largest companies out of any ...
en.wikipedia.org
en.wikipedia.org
shell
shell/ʃel; ʃɛl/ n1 [C, U] hard outer covering of eggs, of nut-kernels, of some seeds and fruits, and of animals such as oysters, snails, crabs and tortoises (卵、 坚果、 种子、 果实以及牡蛎、 蜗牛、 蟹、 龟等的)壳 collecting sea-shells on the beach 在海滩捡贝壳 empty coconut shells 空的椰子壳 broken pieces of shell 贝壳的碎片. =>illus 见插图...
牛津英汉双解词典
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Shell - LinkedIn
Shell is a global group of energy and petrochemical companies, employing 96,000 people across 70+ countries. We serve around 1 million ...
www.linkedin.com
www.linkedin.com
Shell | London - Facebook
Shell, London. 9741629 likes · 15782 talking about this. Shell is a global group of energy and petrochemical companies, employing 96000 people across...
www.facebook.com
www.facebook.com
Shell - YouTube
Welcome to our official YouTube channel. Subscribe to learn about the energy transition, our people, projects and innovations powering progress at Shell.
www.youtube.com
www.youtube.com
Z shell
Z shell(Zsh)是一款可用作登录的shell及脚本编写的命令解释器。Zsh对Bourne shell做出了大量改进,同时加入了Bash、ksh及tcsh的某些功能。
自2019年起,macOS的预设Shell已从Bash改为Zsh。 名称zsh源于耶鲁大学教授邵中(Zhong Shao,后转为普林斯顿大学教授) — 保罗将教授的用户名"zsh"作为此Shell的名称。
wikipedia.org
zh.wikipedia.org
Shell 是用来解决什么问题的?
可以把 shell 理解为 命令解释器。 而 shell 的作用就是解释某条命令对应的文件的文件路径,供用户使用并返回使用结果。这也就是为何有 shell 脚本一说。脚本语言是种解释型语言,不能编译成二进制代码,区别于编译型语言。就如 shell ,它的作用是将命令解释成对应的文件名,然后通过文件名调用文件。
zhihu
www.zhihu.com
C Shell
C shell(csh)是Unix shell的一种,由比尔·乔伊在BSD系统上开发。C shell脱胎于Unix第六版的/bin/sh,也是Bourne shell的前身。 目前C shell已不再被广泛使用,后继者包括Tenex C shell(tcsh)、Korn shell(ksh)、GNU Bourne-Again shell(bash)。
C shell在交互模式中引入许多开创性功能的同时,C shell的脚本执行能力受到了不少批评。
wikipedia.org
zh.wikipedia.org
Shell 是用来解决什么问题的?
如果你自己定义一个解析字符串的“Shell”,你可以规定用分号而不是空格做分隔符;用#而不是$代表变量…… Shell也可以做成图形界面的,比如你点击一个窗口里左边的一个目录图标,右边就展示这个目录下的所有文件。 如果你开心,你甚至都把Shell可以做成声控的,比如你说一段语音,你的“Shell”识别后翻译为调用程序的指令,执行成功后就可以把结果翻译为语音再返回给你。你一定熟悉“小爱同学”,“Hi Siri”这种东西吧。 Shell的思想很普遍,并不一定限制在操作系统上。
zhihu
www.zhihu.com
Unix shell
各种Unix shell
第一个Unix shell是由肯·汤普逊,仿效Multics上的shell所实作出来,称为sh。
Bourne shell兼容
Bourne shell(sh)史蒂夫·伯恩在贝尔实验室时编写。1978年随Version 7 Unix首次发布。 Almquist shell(ash)
Bourne-Again shell(bash)
Debian Almquist shell(dash)
Korn shell(ksh)在贝尔实验室时编写。
wikipedia.org
zh.wikipedia.org