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Yash

Free#15 of 27 in Command-Line Shells

Yash: Yash pairs POSIX shell syntax with prediction, completion, and extended features. Ranked #15 of 27 in Command-Line Shells by our editors (7.3/10); pricing: Free plan; best for POSIX shell users wanting prediction and extended syntax.

7.3/10Editor score
Visit Yash
Yash7.3 Visit Yash

At a glance

  • Editor score
    7.3 / 10
  • Pricing
    Free plan
  • Best for
    POSIX shell users wanting prediction and extended syntax
  • Free plan
    Yes
  • Paid from
    None
  • Command completion
    Yes
  • Facts checked
    28 Sep 2026

  • Where it wins

    • History-based command prediction and completion scripts for over 100 commands
    • Adds global aliases, arrays, brace expansion, and extended globbing
    • Vi- and emacs-style editing plus configurable startup scripts

  • Where it doesn't

    • Its extensions may not suit users seeking only standard POSIX shell behavior
    • Interactive features depend on configuring and learning Yash-specific settings
    • Documentation is the listed support channel

Our verdict on Yash

Yash is a C99 command-line shell for interactive use and scripting on POSIX-compatible systems. It is aimed at POSIX shell users who want familiar syntax alongside extensions such as arrays, global aliases, and extended globbing. Yash is open source under the GNU General Public License version 2, available as source code and through operating-system package managers, and can be self-hosted. Its package availability includes Fedora, Debian, Ubuntu, macOS, FreeBSD, NetBSD, OpenBSD, and Gentoo; the vendor says it should build and run on POSIX.1-2001 environments.

Interactive work is a notable focus. Yash offers command-line completion scripts for more than 100 commands and prediction based on command history, with vi- or emacs-style line editing. Login and interactive startup behavior can be configured through `~/.yash_profile` and `~/.yashrc`. These features make it a fit for users who want a configurable terminal shell as well as a scripting environment. Its support channel is documentation, so it may be less suitable for buyers who expect a dedicated support team.

Yash’s appeal is its combination of POSIX-compliant syntax and additional shell capabilities, including socket, pipeline, and process redirection. Because the language extends POSIX shell syntax, teams that prioritize scripts constrained to standard POSIX behavior should consider whether those extensions fit their portability needs. It is distributed software rather than a paid-plan product, making it a candidate for individuals and organizations comfortable sourcing and managing their own shell. Choose Yash for its interactive prediction and extended syntax; choose a more strictly standard shell if extensions are unwelcome.

Yash pricing

Plans Free planFree Free to use — no paid tier required for the core job.
See plans on magicant.github.io

Yash fact sheet

Free planYes
Paid fromNone
Supported platformsPOSIX.1-2001 environments; package availability includes Fedora, Debian, Ubuntu, macOS, FreeBSD, NetBSD, OpenBSD, and Gentoo
Scripting languageYash shell language (POSIX shell syntax with extensions)
Package managerYes
Config file supportYes
Command completionYes
DeploymentSelf-hosted
PlatformsLinux, macOS, Windows
SupportDocs
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
PricingFree plan
Websitemagicant.github.io
Facts checked28 Sep 2026

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Featured on iTechGuides

Featured on iTechGuides — Yash 7.3/10

Yash is listed in our Command-Line Shells directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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