ps-aux

Supplies process information via the ps aux command.

Tested on Linux and OSX.

var Psaux = require('psaux')
  , psaux = Psaux();
 
psaux.parsed(function (err, res) {
  if (err) return console.error(err);
  console.log(res);
})

[ 
  { user: 'thlorenz',
    pid: 1050,
    '%cpu': 2.6,
    '%mem': 1.3,
    vsz: 4490356,
    rss: 217636,
    tty: '??',
    state: 'S',
    started: '5Aug14',
    time: '123:03.05',
    command: '/Applications/iTerm.app/Contents/MacOS/iTerm' },
  { user: '_coreaudiod',
    pid: 257,
    '%cpu': 0.6,
    '%mem': 0.2,
    vsz: 2553344,
    rss: 38572,
    tty: '??',
    state: 'Ss',
    started: '5Aug14',
    time: '32:23.58',
    command: '/usr/sbin/coreaudiod' },
    [...]
]

Table of Contents generated with DocToc

• Installation
• API
  • Psaux
  • psaux::clearInterval()
  • psaux::obtain(cb)
  • psaux::parsed(cb)
  • psaux::setInterval(opts)
  • psaux::singleton() → {object}
  • Example
• License

Installation

npm install ps-aux

API

Psaux

Creates a psaux object.

Source:

• index.js , lineno 34

psaux::clearInterval()

Clears any previously registered interval at which process information was obtained and emitted.

Source:

• index.js , lineno 167

See:

• psaux::setInterval

psaux::obtain(cb)

Obtains raw process information

Parameters:

Name	Type	Description
cb	function	called back with an array of strings each containing information of a running process

Source:

• index.js , lineno 49

psaux::parsed(cb)

Obtains process information and parses it.

VSZ is the Virtual Memory Size. It includes all memory that the process can access, including memory that is swapped out and memory that is from shared libraries.

RSS is the Resident Set Size and is used to show how much memory is allocated to that process and is in RAM. It does not include memory that is swapped out. It does include memory from shared libraries as long as the pages from those libraries are actually in memory. It does include all stack and heap memory.

Parameters:

Name	Type	Description
cb	function	called back with an array containing running process information process info: user : id of the user that owns the process pid : process id %cpu : percent of the CPU usage %mem : percent memory usage vsz : virtual memory size rss : resident set size tty : controlling terminal state : current state of the process (i.e. sleeping) started : start time of process time : how long the process is running command : command line used to start the process (including args)

Source:

• index.js , lineno 80

psaux::setInterval(opts)

Causes the psaux object to obtain process information at the given interval and emit an event for each. When invoked, previously set intervals are cancelled.

Parameters:

Name	Type	Description
opts	Object	options Properties Name Type Description parsed boolean if true, the process information is parsed before it is emitted (default: true) interval number interval in milliseconds at which to emit process information (default: 20,000)

Source:

• index.js , lineno 145

psaux::singleton() → {object}

A singleton psaux instance. Use it in order to ensure that you only use one instance throughout your app.

Example

// foo.js
var psaux = require('ps-aux').singleton
psaux.setInterval({ parsed: true, interval: 5000 });
// bar.js
var psaux = require('ps-aux').singleton
psaux.on('info', console.log);

Source:

• index.js , lineno 181

Returns:

a constructed psaux object

Type

object

generated with docme

License

MIT