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https://github.com/charmbracelet/gum
A tool for glamorous shell scripts π
https://github.com/charmbracelet/gum
bash shell
Last synced: 4 days ago
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A tool for glamorous shell scripts π
- Host: GitHub
- URL: https://github.com/charmbracelet/gum
- Owner: charmbracelet
- License: mit
- Created: 2022-06-10T22:09:42.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-05-13T11:35:01.000Z (7 months ago)
- Last Synced: 2024-05-17T00:23:37.213Z (7 months ago)
- Topics: bash, shell
- Language: Go
- Homepage:
- Size: 559 KB
- Stars: 16,902
- Watchers: 53
- Forks: 321
- Open Issues: 153
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
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README
# Gum
A tool for glamorous shell scripts. Leverage the power of
[Bubbles](https://github.com/charmbracelet/bubbles) and [Lip
Gloss](https://github.com/charmbracelet/lipgloss) in your scripts and aliases
without writing any Go code!The above example is running from a single shell script ([source](./examples/demo.sh)).
## Tutorial
Gum provides highly configurable, ready-to-use utilities to help you write
useful shell scripts and dotfiles aliases with just a few lines of code.
Let's build a simple script to help you write
[Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/#summary)
for your dotfiles.Ask for the commit type with gum choose:
```bash
gum choose "fix" "feat" "docs" "style" "refactor" "test" "chore" "revert"
```> [!NOTE]
> This command itself will print to stdout which is not all that useful. To make use of the command later on you can save the stdout to a `$VARIABLE` or `file.txt`.Prompt for the scope of these changes:
```bash
gum input --placeholder "scope"
```Prompt for the summary and description of changes:
```bash
gum input --value "$TYPE$SCOPE: " --placeholder "Summary of this change"
gum write --placeholder "Details of this change"
```Confirm before committing:
```bash
gum confirm "Commit changes?" && git commit -m "$SUMMARY" -m "$DESCRIPTION"
```Check out the [complete example](https://github.com/charmbracelet/gum/blob/main/examples/commit.sh) for combining these commands in a single script.
## Installation
Use a package manager:
```bash
# macOS or Linux
brew install gum# Arch Linux (btw)
pacman -S gum# Nix
nix-env -iA nixpkgs.gum# Flox
flox install gum# Windows (via WinGet or Scoop)
winget install charmbracelet.gum
scoop install charm-gum
```Debian/Ubuntu
```bash
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://repo.charm.sh/apt/gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/charm.gpg
echo "deb [signed-by=/etc/apt/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | sudo tee /etc/apt/sources.list.d/charm.list
sudo apt update && sudo apt install gum
```Fedora/RHEL/OpenSuse
```bash
echo '[charm]
name=Charm
baseurl=https://repo.charm.sh/yum/
enabled=1
gpgcheck=1
gpgkey=https://repo.charm.sh/yum/gpg.key' | sudo tee /etc/yum.repos.d/charm.repo
sudo rpm --import https://repo.charm.sh/yum/gpg.key# yum
sudo yum install gum# zypper
sudo zypper refresh
sudo zypper install gum
```Or download it:
- [Packages][releases] are available in Debian, RPM, and Alpine formats
- [Binaries][releases] are available for Linux, macOS, Windows, FreeBSD, OpenBSD, and NetBSDOr just install it with `go`:
```bash
go install github.com/charmbracelet/gum@latest
```[releases]: https://github.com/charmbracelet/gum/releases
## Commands
- [`choose`](#choose): Choose an option from a list of choices
- [`confirm`](#confirm): Ask a user to confirm an action
- [`file`](#file): Pick a file from a folder
- [`filter`](#filter): Filter items from a list
- [`format`](#format): Format a string using a template
- [`input`](#input): Prompt for some input
- [`join`](#join): Join text vertically or horizontally
- [`pager`](#pager): Scroll through a file
- [`spin`](#spin): Display spinner while running a command
- [`style`](#style): Apply coloring, borders, spacing to text
- [`table`](#table): Render a table of data
- [`write`](#write): Prompt for long-form text
- [`log`](#log): Log messages to output## Customization
You can customize `gum` options and styles with `--flags` and `$ENVIRONMENT_VARIABLES`.
See `gum --help` for a full view of each command's customization and configuration options.Customize with `--flags`:
```bash
gum input --cursor.foreground "#FF0" \
--prompt.foreground "#0FF" \
--placeholder "What's up?" \
--prompt "* " \
--width 80 \
--value "Not much, hby?"
```Customize with `ENVIRONMENT_VARIABLES`:
```bash
export GUM_INPUT_CURSOR_FOREGROUND="#FF0"
export GUM_INPUT_PROMPT_FOREGROUND="#0FF"
export GUM_INPUT_PLACEHOLDER="What's up?"
export GUM_INPUT_PROMPT="* "
export GUM_INPUT_WIDTH=80# --flags can override values set with environment
gum input
```## Input
Prompt for input with a simple command.
```bash
gum input > answer.txt
gum input --password > password.txt
```## Write
Prompt for some multi-line text (`ctrl+d` to complete text entry).
```bash
gum write > story.txt
```## Filter
Filter a list of values with fuzzy matching:
```bash
echo Strawberry >> flavors.txt
echo Banana >> flavors.txt
echo Cherry >> flavors.txt
gum filter < flavors.txt > selection.txt
```Select multiple options with the `--limit` flag or `--no-limit` flag. Use `tab` or `ctrl+space` to select, `enter` to confirm.
```bash
cat flavors.txt | gum filter --limit 2
cat flavors.txt | gum filter --no-limit
```## Choose
Choose an option from a list of choices.
```bash
echo "Pick a card, any card..."
CARD=$(gum choose --height 15 {{A,K,Q,J},{10..2}}" "{β ,β₯,β£,β¦})
echo "Was your card the $CARD?"
```You can also select multiple items with the `--limit` or `--no-limit` flag, which determines
the maximum of items that can be chosen.```bash
cat songs.txt | gum choose --limit 5
cat foods.txt | gum choose --no-limit --header "Grocery Shopping"
```## Confirm
Confirm whether to perform an action. Exits with code `0` (affirmative) or `1`
(negative) depending on selection.```bash
gum confirm && rm file.txt || echo "File not removed"
```## File
Prompt the user to select a file from the file tree.
```bash
EDITOR $(gum file $HOME)
```## Pager
Scroll through a long document with line numbers and a fully customizable viewport.
```bash
gum pager < README.md
```## Spin
Display a spinner while running a script or command. The spinner will
automatically stop after the given command exits.To view or pipe the command's output, use the `--show-output` flag.
```bash
gum spin --spinner dot --title "Buying Bubble Gum..." -- sleep 5
```Available spinner types include: `line`, `dot`, `minidot`, `jump`, `pulse`, `points`, `globe`, `moon`, `monkey`, `meter`, `hamburger`.
## Table
Select a row from some tabular data.
```bash
gum table < flavors.csv | cut -d ',' -f 1
```## Style
Pretty print any string with any layout with one command.
```bash
gum style \
--foreground 212 --border-foreground 212 --border double \
--align center --width 50 --margin "1 2" --padding "2 4" \
'Bubble Gum (1Β’)' 'So sweet and so fresh!'
```## Join
Combine text vertically or horizontally. Use this command with `gum style` to
build layouts and pretty output.Tip: Always wrap the output of `gum style` in quotes to preserve newlines
(`\n`) when using it as an argument in the `join` command.```bash
I=$(gum style --padding "1 5" --border double --border-foreground 212 "I")
LOVE=$(gum style --padding "1 4" --border double --border-foreground 57 "LOVE")
BUBBLE=$(gum style --padding "1 8" --border double --border-foreground 255 "Bubble")
GUM=$(gum style --padding "1 5" --border double --border-foreground 240 "Gum")I_LOVE=$(gum join "$I" "$LOVE")
BUBBLE_GUM=$(gum join "$BUBBLE" "$GUM")
gum join --align center --vertical "$I_LOVE" "$BUBBLE_GUM"
```## Format
`format` processes and formats bodies of text. `gum format` can parse markdown,
template strings, and named emojis.```bash
# Format some markdown
gum format -- "# Gum Formats" "- Markdown" "- Code" "- Template" "- Emoji"
echo "# Gum Formats\n- Markdown\n- Code\n- Template\n- Emoji" | gum format# Syntax highlight some code
cat main.go | gum format -t code# Render text any way you want with templates
echo '{{ Bold "Tasty" }} {{ Italic "Bubble" }} {{ Color "99" "0" " Gum " }}' \
| gum format -t template# Display your favorite emojis!
echo 'I :heart: Bubble Gum :candy:' | gum format -t emoji
```For more information on template helpers, see the [Termenv
docs](https://github.com/muesli/termenv#template-helpers). For a full list of
named emojis see the [GitHub API](https://api.github.com/emojis).## Log
`log` logs messages to the terminal at using different levels and styling using
the [`charmbracelet/log`](https://github.com/charmbracelet/log) library.```bash
# Log some debug information.
gum log --structured --level debug "Creating file..." name file.txt
# DEBUG Unable to create file. name=temp.txt# Log some error.
gum log --structured --level error "Unable to create file." name file.txt
# ERROR Unable to create file. name=temp.txt# Include a timestamp.
gum log --time rfc822 --level error "Unable to create file."
```See the Go [`time` package](https://pkg.go.dev/time#pkg-constants) for acceptable `--time` formats.
See [`charmbracelet/log`](https://github.com/charmbracelet/log) for more usage.
## Examples
How to use `gum` in your daily workflows:
See the [examples](./examples/) directory for more real world use cases.
- Write a commit message:
```bash
git commit -m "$(gum input --width 50 --placeholder "Summary of changes")" \
-m "$(gum write --width 80 --placeholder "Details of changes")"
```- Open files in your `$EDITOR`
```bash
$EDITOR $(gum filter)
```- Connect to a `tmux` session
```bash
SESSION=$(tmux list-sessions -F \#S | gum filter --placeholder "Pick session...")
tmux switch-client -t "$SESSION" || tmux attach -t "$SESSION"
```- Pick a commit hash from `git` history
```bash
git log --oneline | gum filter | cut -d' ' -f1 # | copy
```- Simple [`skate`](https://github.com/charmbracelet/skate) password selector.
```
skate list -k | gum filter | xargs skate get
```- Uninstall packages
```bash
brew list | gum choose --no-limit | xargs brew uninstall
```- Clean up `git` branches
```bash
git branch | cut -c 3- | gum choose --no-limit | xargs git branch -D
```- Checkout GitHub pull requests with [`gh`](https://cli.github.com/)
```bash
gh pr list | cut -f1,2 | gum choose | cut -f1 | xargs gh pr checkout
```- Copy command from shell history
```bash
gum filter < $HISTFILE --height 20
```- `sudo` replacement
```bash
alias please="gum input --password | sudo -nS"
```## Feedback
Weβd love to hear your thoughts on this project. Feel free to drop us a note!
- [Twitter](https://twitter.com/charmcli)
- [The Fediverse](https://mastodon.social/@charmcli)
- [Discord](https://charm.sh/chat)## License
[MIT](https://github.com/charmbracelet/gum/raw/main/LICENSE)
---
Part of [Charm](https://charm.sh).
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