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vim-ale/shellcheck/README.md

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---
title: ShellCheck
homepage: https://github.com/koalaman/shellcheck
tagline: |
ShellCheck - A shell script static analysis tool
---
To update or switch versions, run `webi shellcheck@stable`, or `@vx.y.z` for a
specific version.
### Files
These are the files / directories that are created and/or modified with this
install:
```text
~/.config/envman/PATH.env
~/.local/opt/shellcheck/
~/.local/bin/shellcheck
```
## Cheat Sheet
> shellcheck catches rookie mistakes (and old-habits-die-hard mistakes) in bash
Also recommended by Google's
[Shell Style Guide](https://google.github.io/styleguide/shellguide.html)
### How to run shellcheck from the CLI
```sh
shellcheck ./script.sh
```
### How to run shellcheck in vim
`shellcheck` is
[supported by `vim-ale`](https://github.com/dense-analysis/ale/blob/master/supported-tools.md)
out-of-the-box™.
Just [install `vim-ale`](https://webinstall.dev/vim-ale) and `shellcheck` and
you're good to go.
### How to run shellcheck in VS Code
See
[Visual Studio Marketplace: ShellCheck](https://marketplace.visualstudio.com/items?itemName=timonwong.shellcheck).
### To use shellcheck in a build or test suite:
Simply include shellcheck in the process.
```yaml
check-scripts:
# Fail if any of these files have warnings
shellcheck myscripts/*.sh
```
### How to ignore an error
You can ignore an error by putting a comment with the `SCXXXX` error code above
it:
```sh
# shellcheck disable=<code>
```
```sh
# shellcheck disable=SC1004
NOT_AN_ERROR='Look, a literal \
inside of a string!'
```
Complete list of `SCXXXX` error codes:
<https://gist.github.com/nicerobot/53cee11ee0abbdc997661e65b348f375>