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128 lines
3.6 KiB
Markdown
128 lines
3.6 KiB
Markdown
# exec-sh
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[](https://nodei.co/npm/exec-sh/)
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[](https://www.npmjs.com/package/exec-sh)
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[](https://travis-ci.org/tsertkov/exec-sh)
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[](https://coveralls.io/r/tsertkov/exec-sh?branch=master)
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[](https://david-dm.org/tsertkov/exec-sh)
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> Execute shell command forwarding all stdio streams.
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## Features
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exec-sh is a wrapper for [`child_process.spawn`](http://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options) with some improvements:
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- Cross platform command execution:
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- Windows: `cmd /C COMMAND`
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- others: `sh -c COMMAND`
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- Fowrards all stdio streams to current terminal (by default):
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- `execSh("bash")`
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- `execsh("echo -n Say: && read i && echo Said:$i")`
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- stdout and stderr are passed to callback when available
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- `execSh("pwd", console.log)`
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## Showcase
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```javascript
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// JavaScript
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execSh("echo hello exec-sh && bash", { cwd: "/home" }, function(err){
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if (err) {
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console.log("Exit code: ", err.code);
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}
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});
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```
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```sh
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# Terminal output: interactive bash session
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hello exec-sh
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bash-3.2$ pwd
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/home
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bash-3.2$ exit 99
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exit
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Exit code: 99
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```
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## Usage
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```javascript
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var execSh = require("../");
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// run interactive bash shell
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execSh("echo lorem && bash", { cwd: "/home" }, function(err){
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if (err) {
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console.log("Exit code: ", err.code);
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return;
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}
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// collect streams output
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var child = execSh(["bash -c id", "echo lorem >&2"], true,
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function(err, stdout, stderr){
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console.log("error: ", err);
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console.log("stdout: ", stdout);
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console.log("stderr: ", stderr);
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});
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});
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```
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## Promise Interface
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```javascript
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var execShPromise = require("exec-sh").promise;
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// run interactive bash shell
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const run = async () => {
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let out;
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try {
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out = await execShPromise('pwd', true);
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} catch (e) {
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console.log('Error: ', e);
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console.log('Stderr: ', e.stderr);
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console.log('Stdout: ', e.stdout);
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return e;
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}
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console.log('out: ', out.stdout, out.stderr);
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}
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run();
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```
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## Public API
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### `execSh(command, [options], [callback])`
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Execute shell command forwarding all stdio.
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**Parameters:**
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- `command {String|Array}` - The command to run, or array of commands
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- `[options] {Object|TRUE}` - Options object passed directly to [`child_process.spawn`](http://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options), when `TRUE` then `{ stdio: null }` used
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- `[callback] {Function}` - `callback(err, stdout, stderr)`
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- `err {Error|NULL}` - Error object. Has `code` property containing last command exit code when available
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- `stdout {String|NULL}` - aggregated stdout or `NULL` if not available
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- `stderr {String|NULL}` - aggregated stderr or `NULL` if not available
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**Return Values:**
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Returns [ChildProcess](http://nodejs.org/api/child_process.html#child_process_class_childprocess) object.
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## Private API
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Complete API Documentation including private and public methods is generated from source code by JSDoc tool and is [available here](https://s3.eu-central-1.amazonaws.com/tsertkov-artifacts/exec-sh/master/jsdoc/index.html).
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## Code Coverage
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Code coverage report for all files is [available here](https://s3.eu-central-1.amazonaws.com/tsertkov-artifacts/exec-sh/master/coverage/lcov-report/index.html).
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## Scripts
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- `npm test` - run tests
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- `npm run jsdoc` - build jsdoc
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- `npm run dev` - run tests continuously
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## License
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The MIT License (MIT)
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