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ShellCheck: Shell script analysis tool

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This version is deprecated.

The goals of ShellCheck are:

  • To point out and clarify typical beginner's syntax issues, that causes a shell to give cryptic error messages.

  • To point out and clarify typical intermediate level semantic problems, that causes a shell to behave strangely and counter-intuitively.

  • To point out subtle caveats, corner cases and pitfalls, that may cause an advanced user's otherwise working script to fail under future circumstances.

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Modules

[Last Documentation]

  • ShellCheck
    • ShellCheck.AST
    • ShellCheck.ASTLib
    • ShellCheck.Analytics
    • ShellCheck.Analyzer
    • ShellCheck.Checker
    • ShellCheck.Data
    • Formatter
      • ShellCheck.Formatter.Format
    • ShellCheck.Interface
    • ShellCheck.Parser
    • ShellCheck.Regex

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Versions [RSS] 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.6, 0.3.7, 0.3.8, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5, 0.4.6, 0.4.7, 0.5.0, 0.6.0, 0.7.0, 0.7.1, 0.7.2, 0.8.0, 0.9.0, 0.10.0 (info)
Dependencies base (>=4 && <5), containers, directory, json, mtl (>=2.2.1), parsec, QuickCheck (>=2.7.4), regex-tdfa, ShellCheck [details]
License GPL-3.0-only
Author Vidar Holen
Maintainer vidar@vidarholen.net
Category Static Analysis
Home page http://www.shellcheck.net/
Bug tracker https://github.com/koalaman/shellcheck/issues
Source repo head: git clone git://github.com/koalaman/shellcheck.git
Uploaded by vidarhol at 2015-09-05T23:48:43Z
Distributions Arch:0.10.0, Debian:0.8.0, Fedora:0.10.0, FreeBSD:0.3.8, LTSHaskell:0.10.0, NixOS:0.10.0, Stackage:0.10.0, openSUSE:0.10.0
Reverse Dependencies 4 direct, 0 indirect [details]
Executables shellcheck
Downloads 50042 total (31 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by Bayesian average]
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Status Docs not available [build log]
All reported builds failed as of 2016-12-01 [all 7 reports]

Readme for ShellCheck-0.4.0

[back to package description]

ShellCheck - A shell script static analysis tool

http://www.shellcheck.net

Copyright 2012-2015, Vidar 'koala_man' Holen Licensed under the GNU General Public License, v3

The goals of ShellCheck are:

  • To point out and clarify typical beginner's syntax issues, that causes a shell to give cryptic error messages.

  • To point out and clarify typical intermediate level semantic problems, that causes a shell to behave strangely and counter-intuitively.

  • To point out subtle caveats, corner cases and pitfalls, that may cause an advanced user's otherwise working script to fail under future circumstances.

ShellCheck is written in Haskell, and requires 2 GB of memory to compile.

Installing

On systems with Cabal:

cabal update
cabal install shellcheck

On Debian based distros:

apt-get install shellcheck

On OS X with homebrew:

brew install shellcheck

ShellCheck is also available as an online service:

http://www.shellcheck.net

Building with Cabal

This sections describes how to build ShellCheck from a source directory.

First, make sure cabal is installed. On Debian based distros:

apt-get install cabal-install

On Fedora:

yum install cabal-install

On Mac OS X with homebrew (http://brew.sh/):

brew install cabal-install

On Mac OS X with MacPorts (http://www.macports.org/):

port install hs-cabal-install

On native Windows (https://www.haskell.org/platform/):

Download and install the latest version of the Haskell Platform.

Let cabal update itself, in case your distro version is outdated:

$ cabal update
$ cabal install cabal-install

With cabal installed, cd to the ShellCheck source directory and:

$ cabal install

This will install ShellCheck to your ~/.cabal/bin directory.

Add the directory to your PATH (for bash, add this to your ~/.bashrc):

export PATH="$HOME/.cabal/bin:$PATH"

Verify that your PATH is set up correctly:

$ which shellcheck
~/.cabal/bin/shellcheck

On native Windows, the PATH should already be set up, but the system may use a legacy codepage. In cmd.exe, powershell.exe and Powershell ISE, make sure to use a TrueType font, not a Raster font, and set the active codepage to UTF-8 (65001) with chcp:

> chcp 65001
Active code page: 65001

In Powershell ISE, you may need to additionally update the output encoding:

> [Console]::OutputEncoding = [System.Text.Encoding]::UTF8

Running tests

To run the unit test suite:

cabal configure --enable-tests
cabal build
cabal test

Reporting bugs

Please use the Github issue tracker for any bugs or feature suggestions:

https://github.com/koalaman/shellcheck/issues

Happy ShellChecking!