blocks|key|138581|text|只需使用nsIProcess，这样：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|138582|const+{Cc,+Ci}+=+require("chrome");

//+create+an+nsIFile+for+the+executable
var+file+=+Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
file.initWithPath("/usr/bin/du");

//+create+an+nsIProcess
var+process+=+Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
process.init(file);

//+Run+the+process.
//+If+first+param+is+true,+calling+thread+will+be+blocked+until
//+called+process+terminates.
//+Second+and+third+params+are+used+to+pass+command-line+arguments
//+to+the+process.
var+args+=+["-h"];
process.run(false,+args,+args.length);|code-block|syntax|javascript|138583|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIProcess#run%2528%2529^0|4|A|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

<p>Just use <a href="https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIProcess#run%28%29" rel="nofollow">nsIProcess</a>, this way:</p>

<pre class="lang-js prettyprint-override"><code>const {Cc, Ci} = require("chrome");

// create an nsIFile for the executable
var file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
file.initWithPath("/usr/bin/du");

// create an nsIProcess
var process = Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
process.init(file);

// Run the process.
// If first param is true, calling thread will be blocked until
// called process terminates.
// Second and third params are used to pass command-line arguments
// to the process.
var args = ["-h"];
process.run(false, args, args.length);
</code></pre>


blocks|key|138659|text|这里的主题对此很有帮助：X11:获取nsIProcess的输出|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|138660|nsIProcess|138661|@matagus是对的，您可以使用nsIProcess启动该文件。|138662|子进程(在其中使用js-ctype)|138663|您可以使用subrpcoess.jsm：|138664|https://github.com/ochameau/jetpack-subprocess|138665|const+subprocess+=+require("subprocess");
var+p+=+subprocess.call({
++command:+++++'echo',

++//+Print+stdin+and+our+env+variable
++arguments:+++['$@',+'$ENV_TEST'],
++environment:+['ENV_TEST=OK'],

++stdin:+subprocess.WritablePipe(function()+{
++++this.write("stdin");
++++this.close();
++}),
++stdout:+subprocess.ReadablePipe(function(data)+{
++++//+data+should+be+equal+to:+"stdin+OK"

++}),
++stderr:+subprocess.ReadablePipe(function(data)+{

++}),
++onFinished:+subprocess.Terminate(function()+{

++}),
++mergeStderr:+false
});|code-block|syntax|javascript|138666|js-ctypes+popen|138667|您还可以使用jsctype和popen：|style|CODE|138668|popen.js|138669|阅读要点的自述。|138670|在下面的示例中，im正在做readlink。保持导入osfile.jsm，就像用于检查mac还是linux一样|138671|Cu.import('resource://gre/modules/ctypes.jsm');
Cu.import('resource://gre/modules/osfile.jsm');

function+doit()+{
++++try+{
++++++++if+(OS.Constants.Sys.Name+==+'Darwin')+{
++++++++++++var+_libc+=+ctypes.open('libc.dylib');
++++++++}+else+if+(OS.Constants.Sys.Name+==+'Linux')+{
++++++++++++var+_libc+=+ctypes.open('libc.so.6');
++++++++}
++++}+catch+(e)+{
++++++++try+{
++++++++++++var+libName+=+ctypes.libraryName('libc');
++++++++}+catch+(e)+{
++++++++++++console.error('Integration:+Could+not+get+libc+name;+not+activating');
++++++++++++return;
++++++++}

++++++++try+{
++++++++++++_libc+=+ctypes.open(libName);
++++++++}+catch+(e)+{
++++++++++++console.error('Integration:+Could+not+open+'+%2B+libName+%2B+';+not+activating');
++++++++++++return;
++++++++}
++++}

++++var+popen+=+_libc.declare('popen',+ctypes.default_abi,+ctypes.voidptr_t,+//+Return+int
++++++++ctypes.char.ptr,+//+Param1+const+char+*command
++++++++ctypes.char.ptr+//+Param1+const+char+*command
++++);

++++var+fread+=+_libc.declare('fread',+ctypes.default_abi,+ctypes.size_t,+//+Return+int
++++++++ctypes.voidptr_t,
++++++++ctypes.size_t,
++++++++ctypes.size_t,
++++++++ctypes.voidptr_t
++++);

++++var+pclose+=+_libc.declare('pclose',+ctypes.default_abi,+ctypes.int,+//+Return+int
++++++++ctypes.voidptr_t
++++);

++++////////////////////////
++++////END+DECLARATIONS
++++////////////////////////

++++//var+rez+=+popen('readlink+-q+"/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed+Profile+1/.parentlock"',+'r')
++++//console.log('rez:',+rez.toString())
++++var+lockFilePath+=+OS.Path.join(OS.Constants.Path.profileDir,+'lock');
++//var+lockFilePath+=+'/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed+Profile+1/lock';
++//var+lockFilePath+=+'/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed+Profile+1/.parentlock';
++console.log(lockFilePath);

++++/*
++var+promise+=+OS.File.read(OS.Path.join(OS.Constants.Path.profileDir,+'.parentlock'),+{encoding:'utf-8'});
++promise.then(
+++function(aVal)+{
+++++console.log('read+val:',+aVal);
+++},
++++function(aReason)+{
++++console.log('failed+for+aReason:',+aReason,+aReason.becauseNoSuchFile);
++++}
++)

++++//on+linux+it+reads+.parentlock,+and+if+you+try+to+read+lock+it+returns+aReason.becauseNoSuchFile+==+true
++++*/

++console.time('popen');
++++var+file+=+popen('readlink+-q+"'+%2B+lockFilePath+%2B+'"',+'r')
++console.log(file.toString())
++++var+bufferSize+=+1000;
++++var+buffer+=+ctypes.char.array(bufferSize)('');
++++var+size+=+bufferSize;
++++var+outList+=+[];
++++while+(size+==+bufferSize)+{
++++++++size+=+fread(buffer,+1,+bufferSize,+file);
++++++++outList.push(buffer.readString().substring(0,+size));
++++}
++++pclose(file);
++++console.timeEnd('popen')
++++console.log(outList.join(''));


}

doit();|138672|entityMap|0|LINK|mutability|MUTABLE|url|https://ask.mozilla.org/question/1086/x11-getting-output-of-nsiprocess/?answer=1116#post-id-1116|1|2|https://gist.github.com/Noitidart/32aee4fc3dea051d1b4c^0|C|J|0|0|0|0|0|0|0|1A|1|0|0|0|E|5|0|0|8|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1H|8|@]|9|@$A|1I|B|1J|1|1K]]|C|$]]|$1|D|3|E|5|6|7|1L|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1M|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|1N|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|1O|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1P|8|@]|9|@$A|1Q|B|1R|1|1S]]|C|$]]|$1|N|3|O|5|P|7|1T|8|@]|9|@]|C|$Q|R]]|$1|S|3|T|5|6|7|1U|8|@]|9|@]|C|$]]|$1|U|3|V|5|6|7|1V|8|@$A|1W|B|1X|W|X]]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|1Y|8|@]|9|@$A|1Z|B|20|1|21]]|C|$]]|$1|10|3|11|5|6|7|22|8|@]|9|@]|C|$]]|$1|12|3|13|5|6|7|23|8|@]|9|@]|C|$]]|$1|14|3|15|5|P|7|24|8|@]|9|@]|C|$Q|R]]|$1|16|3|-4|5|6|7|25|8|@]|9|@]|C|$]]]|17|$18|$5|19|1A|1B|C|$1C|1D]]|1E|$5|19|1A|1B|C|$1C|M]]|1F|$5|19|1A|1B|C|$1C|1G]]]]

<p>This topic here is good for this: <a href="https://ask.mozilla.org/question/1086/x11-getting-output-of-nsiprocess/?answer=1116#post-id-1116" rel="nofollow">ask.m.o :: X11: Getting output of nsIProcess</a></p>

<h3>nsIProcess</h3>

<p>@matagus is right, you can launch the file with nsIProcess.</p>

<h3>subprocess (which uses js-ctypes within it)</h3>

<p>You can use subrpcoess.jsm:</p>

<p><a href="https://github.com/ochameau/jetpack-subprocess" rel="nofollow">https://github.com/ochameau/jetpack-subprocess</a></p>

<pre><code>const subprocess = require("subprocess");
var p = subprocess.call({
  command:     'echo',

  // Print stdin and our env variable
  arguments:   ['$@', '$ENV_TEST'],
  environment: ['ENV_TEST=OK'],

  stdin: subprocess.WritablePipe(function() {
    this.write("stdin");
    this.close();
  }),
  stdout: subprocess.ReadablePipe(function(data) {
    // data should be equal to: "stdin OK"

  }),
  stderr: subprocess.ReadablePipe(function(data) {

  }),
  onFinished: subprocess.Terminate(function() {

  }),
  mergeStderr: false
});
</code></pre>

<h3>js-ctypes popen</h3>

<p>You can also use jsctypes and <code>popen</code>: </p>

<p><a href="https://gist.github.com/Noitidart/32aee4fc3dea051d1b4c" rel="nofollow">GitHubGIST :: Noitidart / _ff-addon-snippet-LibC_popen.js</a></p>

<p>Read the readme of the gist.</p>

<p>in example below im doing readlink. keep osfile.jsm imported as thats used for checking if mac or linux</p>

<pre><code>Cu.import('resource://gre/modules/ctypes.jsm');
Cu.import('resource://gre/modules/osfile.jsm');

function doit() {
    try {
        if (OS.Constants.Sys.Name == 'Darwin') {
            var _libc = ctypes.open('libc.dylib');
        } else if (OS.Constants.Sys.Name == 'Linux') {
            var _libc = ctypes.open('libc.so.6');
        }
    } catch (e) {
        try {
            var libName = ctypes.libraryName('libc');
        } catch (e) {
            console.error('Integration: Could not get libc name; not activating');
            return;
        }

        try {
            _libc = ctypes.open(libName);
        } catch (e) {
            console.error('Integration: Could not open ' + libName + '; not activating');
            return;
        }
    }

    var popen = _libc.declare('popen', ctypes.default_abi, ctypes.voidptr_t, // Return int
        ctypes.char.ptr, // Param1 const char *command
        ctypes.char.ptr // Param1 const char *command
    );

    var fread = _libc.declare('fread', ctypes.default_abi, ctypes.size_t, // Return int
        ctypes.voidptr_t,
        ctypes.size_t,
        ctypes.size_t,
        ctypes.voidptr_t
    );

    var pclose = _libc.declare('pclose', ctypes.default_abi, ctypes.int, // Return int
        ctypes.voidptr_t
    );

    ////////////////////////
    ////END DECLARATIONS
    ////////////////////////

    //var rez = popen('readlink -q "/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed Profile 1/.parentlock"', 'r')
    //console.log('rez:', rez.toString())
    var lockFilePath = OS.Path.join(OS.Constants.Path.profileDir, 'lock');
  //var lockFilePath = '/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed Profile 1/lock';
  //var lockFilePath = '/home/noi/.mozilla/firefox/q0rlb7ap.Unnamed Profile 1/.parentlock';
  console.log(lockFilePath);

    /*
  var promise = OS.File.read(OS.Path.join(OS.Constants.Path.profileDir, '.parentlock'), {encoding:'utf-8'});
  promise.then(
   function(aVal) {
     console.log('read val:', aVal);
   },
    function(aReason) {
    console.log('failed for aReason:', aReason, aReason.becauseNoSuchFile);
    }
  )

    //on linux it reads .parentlock, and if you try to read lock it returns aReason.becauseNoSuchFile == true
    */

  console.time('popen');
    var file = popen('readlink -q "' + lockFilePath + '"', 'r')
  console.log(file.toString())
    var bufferSize = 1000;
    var buffer = ctypes.char.array(bufferSize)('');
    var size = bufferSize;
    var outList = [];
    while (size == bufferSize) {
        size = fread(buffer, 1, bufferSize, file);
        outList.push(buffer.readString().substring(0, size));
    }
    pclose(file);
    console.timeEnd('popen')
    console.log(outList.join(''));


}

doit();
</code></pre>


blocks|key|138684|text|Add+on+SDK现在有自己的方法来创建在所有plattform上工作的子进程：流程。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|138685|下面是一个示例：|138686|var+child_process+=+require("sdk/system/child_process");

var+ls+=+child_process.spawn('/bin/ls',+['-lh',+'/usr']);

ls.stdout.on('data',+function+(data)+{
++console.log('stdout:+'+%2B+data);
});

ls.stderr.on('data',+function+(data)+{
++console.log('stderr:+'+%2B+data);
});

ls.on('close',+function+(code)+{
++console.log('child+process+exited+with+code+'+%2B+code);
});|code-block|syntax|javascript|138687|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/system_child_process^0|15|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

<p>The Add-On SDK now has its own way for creating child processes that works on all plattforms: <a href="https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/system_child_process" rel="nofollow">https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/system_child_process</a></p>

<p>Here is an example:</p>

<pre class="lang-js prettyprint-override"><code>var child_process = require("sdk/system/child_process");

var ls = child_process.spawn('/bin/ls', ['-lh', '/usr']);

ls.stdout.on('data', function (data) {
  console.log('stdout: ' + data);
});

ls.stderr.on('data', function (data) {
  console.log('stderr: ' + data);
});

ls.on('close', function (code) {
  console.log('child process exited with code ' + code);
});
</code></pre>


<p>I wanna run a Linux command with firefox sdk. </p>

<p>already I searched about that , but all example describe how to run an executable file in windows. I need to run a Linux command.</p>


run a linux command with firefox sdk

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想使用firefox运行Linux命令。我已经搜索过了，但是所有的示例都描述了如何在windows中运行可执行文件。我需要运行一个Linux命令。

问使用firefox运行linux命令
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