simple-cmd: Simple String-based process commands
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.
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- simple-cmd-0.2.4.tar.gz [browse] (Cabal source package)
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| Versions [RSS] | 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, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.2.7 |
|---|---|
| Change log | ChangeLog.md |
| Dependencies | base (<5), directory (>=1.2.5.0), extra, filepath, process (>=1.4.3.0), unix [details] |
| License | BSD-3-Clause |
| Copyright | 2017-2022 Jens Petersen <juhpetersen@gmail.com> |
| Author | Jens Petersen <juhpetersen@gmail.com> |
| Maintainer | Jens Petersen <juhpetersen@gmail.com> |
| Revised | Revision 1 made by JensPetersen at 2022-04-24T09:06:28Z |
| Category | System |
| Home page | https://github.com/juhp/simple-cmd |
| Bug tracker | https://github.com/juhp/simple-cmd/issues |
| Source repo | head: git clone https://github.com/juhp/simple-cmd |
| Uploaded | by JensPetersen at 2022-03-27T09:25:20Z |
| Distributions | Fedora:0.2.7, LTSHaskell:0.2.7, NixOS:0.2.7, Stackage:0.2.7 |
| Reverse Dependencies | 2 direct, 1 indirect [details] |
| Downloads | 6348 total (64 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2022-03-27 [all 1 reports] |
Readme for simple-cmd-0.2.4
[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"])
pipeBool returns True if both commands succeed.
Other examples:
gitBranch :: IO String
grep_ pat file :: IO Bool
sudo_ c args :: IO ()
See the library documentation for more details.