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https://github.com/hairyhenderson/go-which
A cross-platform Go implementation of the which(1) command, usable both as a CLI and library
https://github.com/hairyhenderson/go-which
cli cross-platform go go-package golang golang-cli golang-library hacktoberfest library shell
Last synced: 3 months ago
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A cross-platform Go implementation of the which(1) command, usable both as a CLI and library
- Host: GitHub
- URL: https://github.com/hairyhenderson/go-which
- Owner: hairyhenderson
- License: mit
- Created: 2018-12-31T13:40:07.000Z (about 6 years ago)
- Default Branch: main
- Last Pushed: 2024-03-09T00:58:19.000Z (11 months ago)
- Last Synced: 2024-05-02T04:44:20.426Z (9 months ago)
- Topics: cli, cross-platform, go, go-package, golang, golang-cli, golang-library, hacktoberfest, library, shell
- Language: Go
- Homepage: https://pkg.go.dev/github.com/hairyhenderson/go-which
- Size: 531 KB
- Stars: 45
- Watchers: 3
- Forks: 1
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
Awesome Lists containing this project
README
# go-which
[![Build Status][build-image]][build-url]
[![hairyhenderson/go-which on DockerHub][dockerhub-image]][dockerhub-url]
[![GoDoc][godoc-image]][godocs]
A cross-platform Go implementation of the `which(1)` command, usable both as a CLI and library.
```console
Usage of which:
-a List all instances of executables found (instead of just the first).
-s No output, just return 0 if all executables are found, or 1 if some were not found.
-v Print the version
```
Unlike the UNIX `which(1)` command, even if multiple programs are given as input, only the first one found will be returned.
## CLI Usage
Chances are you don't really need this, since most UNIX-like OSes come with the more established (and significantly smaller) C implementation of `which(1)`, either as a standalone binary, or as a shell builtin.
_But_ if there's some reason this may be useful to you, you can use this just like the normal `which(1)`:
```console
$ which zsh
/usr/local/bin/zsh
$ which -a zsh
/usr/local/bin/zsh
/bin/zsh
```
```console
$ which zsh bash sh
/usr/local/bin/zsh
$ which -a zsh bash sh
/usr/local/bin/zsh
/bin/zsh
/bin/bash
/bin/sh
```
```console
$ if (which -s zsh bash); then
> echo 'I have zsh and bash installed';
> fi
I have zsh and bash installed
$ if (which -s zsh bash ash); then echo 'yup'
> else
> echo "I'm missing one of them...";
> fi
I'm missing one of them...
```
## Go package usage
If you're writing a program in the Go language, it can be useful to not have to shell out to `which(1)` to locate a binary.
The simplest usage is:
```go
package main
import (
"fmt"
"github.com/hairyhenderson/go-which"
)
func main() {
zshPath := which.Which("zsh")
fmt.Printf("zsh found at %s", zshPath)
}
```
See the [godocs][] for more information.
## License
[The MIT License](http://opensource.org/licenses/MIT)
Copyright (c) 2018-2020 Dave Henderson
[godocs]: https://pkg.go.dev/github.com/hairyhenderson/go-which
[build-image]: https://github.com/hairyhenderson/go-which/actions/workflows/build.yml/badge.svg
[build-url]: https://github.com/hairyhenderson/go-which/actions/workflows/build.yml
[dockerhub-image]: https://img.shields.io/badge/docker-ready-blue.svg
[dockerhub-url]: https://hub.docker.com/r/hairyhenderson/go-which
[godoc-image]: https://godoc.org/github.com/hairyhenderson/go-which?status.svg