simple-cmd: Simple String-based process commands
This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.
Simple wrappers over System.Process (readProcess, readProcessWithExitCode, rawSystem, and createProcess). The idea is to provide some common idioms for calling out to commands from programs. For more advanced shell-scripting or streaming use turtle, shelly, command, etc.
[Skip to Readme]
Properties
| Versions | 0.1.0.0, 0.1.1, 0.1.2, 0.1.3, 0.1.3.1, 0.1.4, 0.2.0, 0.2.0.1, 0.2.1, 0.2.2, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.2.7 |
|---|---|
| Change log | ChangeLog.md |
| Dependencies | base (<5), directory, extra, filepath, process (>=1.4.3.0), unix [details] |
| License | BSD-3-Clause |
| Copyright | 2017-2020 Jens Petersen <juhpetersen@gmail.com> |
| Author | Jens Petersen |
| Maintainer | juhpetersen@gmail.com |
| Category | System |
| Source repo | head: git clone https://github.com/juhp/simple-cmd |
| Uploaded | by JensPetersen at 2020-06-17T18:20:51Z |
Modules
[Index] [Quick Jump]
Downloads
- simple-cmd-0.2.2.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
Package maintainers
For package maintainers and hackage trustees
Readme for simple-cmd-0.2.2
[back to package description]
simple-cmd
Some simple String wrappers of readProcess, readProcessWithExitCode,
rawSystem from the Haskell process library.
Usage
import SimpleCmd
cmd_ :: String -> [String] -> IO ()
outputs to stdout. For example
cmd_ "echo" ["Hello"]
cmd_ "git" ["clone", url]
This can shortened to git_ "clone" [url].
cmd :: String -> [String] -> IO String
returns stdout as a String. eg
date <- cmd "date" []
There are also cmdBool, cmdMaybe, cmdList, shell, and others.
Simple pipes are also supported:
pipe_ ("echo",["hello"]) ("grep",["ello"])
Other examples:
gitBranch :: IO String
grep_ pat file :: IO Bool
sudo_ c args :: IO ()
See the library documentation for more details.