commandline

Commandline packages simplifies the asynchronous binary execution from Node

How to use

Define a list of commands by executable name, parameters in a array like

var commandItemsArray = [ ['ls','-l','./'], ['ls','-a','./'] ];

that is ls -s ./, ls -a ./.

Create an new Commandline instance

var cmd=require('commandline');
var cmd = new CommandLine({ 
    debug : true, 
    error : true, 
    delay : false });

Run the commands by queueing execution in the Commandline

cmd.executeCommands(commandItemsArray
, function(results) {
    console.log(results);
}
, function(error) {
    console.log(error);
});

How it works

Commandline uses Promise and Promise.all to queue binaries/script execution, and join each child process when it ends.

What can be executed

All binaries that write to or can be piped to stdout can be queued.

Examples

Get now playing track info from Spotify

var cmd = new CommandLine({ 
    debug : true, 
    error : true, 
    delay : true });
var commandItemsArray=[
    ['osascript', '-e', 'tell application "Spotify" to player position as string'],
    ['osascript', '-e', 'tell application "Spotify" to artist of current track as string'],
    ['osascript', '-e', 'tell application "Spotify" to name of current track as string']
];
cmd.executeCommands(commandItemsArray
, function(results) {
    console.log(results);
}
, function(error) {
    console.log(error);
});

will return

[ { data: '119,833000183105',
    exitCode: 0,
    cli: 'osascript -e tell application "Spotify" to player position as string' },
  { data: 'Enforcer',
    exitCode: 0,
    cli: 'osascript -e tell application "Spotify" to artist of current track as string' },
  { data: 'Midnight Vice',
    exitCode: 0,
    cli: 'osascript -e tell application "Spotify" to name of current track as string' } ]