Elvish is an expressive programming language and a versatile interactive shell, combined into one seamless package. It runs on Linux, BSDs, macOS and Windows.
Demos
Enable JavaScript to see demos as slides.
Powerful Pipelines
Text pipelines are intuitive and powerful. However, if your data have
inherently complex structures, processing them with the pipeline
often requires a lot of ad-hoc, hard-to-maintain text processing code.
Pipelines in Elvish can carry structured data, not just text. You can
stream lists, maps and even functions through the pipeline.
~> curl https://api.github.com/repos/elves/elvish/issues |
from-json | all (one) |
each [issue]{ echo $issue[number]: $issue[title] } |
head -n 11
366: Support searching file from elvish directly
364: Ctrl-C in elvish kills Atom in background
357: Asynchronous syntax highlighting
356: In web backend, run commands with pty IO, not pipe
354: Support multi-line prompts from byte output
353: Completers should detect context in a top-down manner
352: Quoted command names are highlighted randomly
351: keep navigation mode open after command
350: Raw mode requires two presses of ^V
344: Elvish won't compile
343: Possible to suppress job control messages?
Intuitive Control Structures
If you know programming, you probably already know how
if looks in C. So why learn another syntax?
Elvish comes with a standard set of control structures: conditional
control with if, loops with for and
while, and exception handling with try. All
of them have a familiar C-like syntax.
~> if $true { echo good } else { echo bad }
good
~> for x [lorem ipsum] {
echo $x.pdf
}
lorem.pdf
ipsum.pdf
~> try {
fail 'bad error'
} except e {
echo error $e
} else {
echo ok
}
error ?(fail 'bad error')
Directory History
Do you type far too many cd commands? Do you struggle to
remember which deeply/nested/directory your source codes,
logs and configuration files are?
Backed by a real database, Elvish remembers all the directories you
have been to, all the time. Just press Ctrl-L
and search, as you do in a browser.
~> xiaq@xiaqsmbp
LOCATION
* ~
* ~/go/src/github.com/elves/elvish │
110 ~/on/elvish-site/code │
62 ~/on/elvish-site/code/src │
52 ~/go/src/github.com/elves/elvish/edit │
34 ~/on/elvish-site/code/tty │
33 ~/on/elvish-site/code/assets │
32 ~/go/src/github.com/elves/elvish/eval │
26 ~/on/chat-app/code │
24 ~/on/elvish-site/code/dst │
20 ~/go/src/github.com/elves/md-highlighter │
14 ~/on/chat-app/code/public │
13 ~/.elvish │
Command History
Want to find the magical ffmpeg command that you used to
transcode a video file two months ago, but it is buried under a
million other commands?
No more cycling through history one command at a time.
Press Ctrl-R and start searching your entire
command history.
~> xiaq@xiaqsmbp
HISTORY
13345 make tools/ttyshot │
13346 make │
13347 ./assets/ │
13348 ls │
13349 ls │
13350 rm *.png │
13351 git st │
13352 .. │
13353 git st │
13354 git add . │
13355 git st │
13356 git commit │
13357 git push │
Built-in File Manager
Want the convenience of a file manager, but can't give up the power of
a shell?
You no longer have to make a choice. Press Ctrl-N to start exploring directories and
preview files, with the full power of a shell still under your
fingertip.
~/go/src/github.com/elves/elvish> xiaq@xiaqsmbp
NAVIGATING
elvish CONTRIBUTING.md FROM golang:onbuild
fix-for-0.7 Dockerfile
images Gopkg.lock
md-highlighter Gopkg.toml
LICENSE
Makefile
README.md
cover │
daemon │
edit │
errors │
eval │
getopt │
Run Elvish
Use this Site
Start your Elvish journey in this very website!
Learn the fundamentals and interesting topics
Peruse the definitive reference documents
Read the blog for news, tips, and developers’ musings
Subscribe to the feed to keep updated
Join any of the following channels – they are all all bridged together thanks to Matrix!
More Resources