Shell

Thompson shell - first Unix shell - 1971

Wikipedia:

https://en.wikipedia.org/wiki/Thompson_shell

Bourne Shell - 1977

Bell Labs 當初釋出的實做

csh - 1978

tcsh - 1983

ksh (Korn Shell)

pdksh (Public Domain Korn Shell)

mksh

ash (Almquist shell)

• FreeBSD sh 是基於 ash (Almquist shell) 再去改的

• BusyBox 裡面也是基於 ash

  • BusyBox - shell

Bash (Bourne-again shell) - GNU Project

Site:

https://www.gnu.org/software/bash/

Repo:

https://git.savannah.gnu.org/cgit/bash.git

Extend Framework:

https://github.com/Bash-it/bash-it

dash

Site:

http://gondor.apana.org.au/~herbert/dash/

Repo:

https://git.kernel.org/pub/scm/utils/dash/dash.git/

zsh

Site:

https://www.zsh.org/

Repo:

https://sourceforge.net/p/zsh/code/ci/master/tree/

Repo-GitHub:

https://github.com/zsh-users/zsh/

Repo-GitLab:

https://sourceforge.net/p/zsh/code/ci/master/tree/

Extend Framework:

https://github.com/robbyrussell/oh-my-zsh

fish - friendly interactive shell

Site:

http://fishshell.com/

Repo:

https://github.com/fish-shell/fish-shell

Extend Framework:

https://github.com/oh-my-fish/oh-my-fish

fish 3.0

• 支援 && || ! 以便從相容 POSIX 規範的 shell 遷移過來

• math 不再是 bc 的包裝

• [GitHub] fish 3.0

• [HN] fish 3.0

xonsh - cross-platform, Unix-gazing shell in Python

Site:

http://xon.sh/

Repo:

https://github.com/xonsh/xonsh

Shell Language 是 Python 3.4+ 的 superset， 藉由 prompt-toolkit 撰寫互動界面， 使用 pip 安裝後即可使用。

Oil - bash-compatible shell in Python

Site:

https://www.oilshell.org/

Repo:

https://github.com/oilshell/oil

Oil 使用自己 fork 出去的 CPython 2.7， 會搭配自己的修改後包在最後釋出的執行檔裡。

Elvish - friendly interactive shell in Go

Site:

https://elv.sh/

Repo:

https://github.com/elves/elvish

Ion - RedoxOS shell in Rust

Repo:

https://gitlab.redox-os.org/redox-os/ion

工具

• ShellCheck - static analysis tool for shell scripts

增加 Shell Script 品質的技巧

• 函式命名使用 :: 作為 namespace 的方式（只是函式名稱剛好有這字串）