---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# help

> Display information about Bash builtin commands.
> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-help>.

- Display the full list of builtin commands:

`help`

- Print instructions on how to use the `while` loop construct:

`help while`

- Print instructions on how to use the `for` loop construct:

`help for`

- Print instructions on how to use `[[ ]]` for conditional commands:

`help [[`

- Print instruction on how to use `(( ))` to evaluate arithmetic expressions:

`help \(`

- Print instructions on how to use the `cd` command:

`help cd`
