es (extensible shell)[1] is a command line interpreter developed by Byron Rakitzis and Paul Haahr, that uses a scripting language syntactically similar to the rc shell of the Plan 9 operating system[2], and was originally based on code from Byron Rakitzis's clone of rc for Unix.[3] It is intended to provide a fully functional programming language as a Unix shell.[4] The bulk of es development occurred in the early 1990s, after the shell was introduced at the Winter 1993 USENIX conference in San Diego.[5]
| es | |
|---|---|
| Designed by | Byron Rakitzis, Paul Haahr |
| First appeared | 1993 |
| Stable release | 0.9-beta1
/ 1997 |
| OS | Unix |
| License | Public Domain |
| Website | http://hawkwind.utcs.utoronto.ca:8001/mlists/es.html |
| Influenced by | |
| Rc | |
Current official releases appear to have ceased with the release of 0.9-beta1 in 1997[6], and standard es lacks some features compared to more popular shells such as zsh and bash [7], but unofficial development has been continued with job control and history patches and a more ambitious fork, Xs (including syntax changes and C++ code).
See also
References
- ^ http://manpages.ubuntu.com/manpages/hardy/man1/es.1.html
- ^ http://foldoc.org/Extensible+Shell
- ^ http://luv.asn.au/overheads/shells-talk.html
- ^ http://nnc3.com/lj/LJ/LJ12/0062.html
- ^ Es: A shell with higher-order functions by Byron Rakitzis, NetApp, Inc, and Paul Haahr, Adobe Systems Incorporated
- ^ ftp://ftp.sys.utoronto.ca/pub/es/
- ^ http://www.faqs.org/faqs/unix-faq/shell/shell-differences/
External links
- Official website
- FTP archive for the es shell Includes mailing list archives
- job control patch
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