Module os

Operating system and file system processing module

Instructions:

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var os = require('os');

Object

Service

Service Constructor, see Service

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Service os.Service;

Static function

hostname

Query the host name of the current operating environment

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static String os.hostname();

Return result:

• String, Return hostname

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endianness

Query the byte order of the current CPU

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static String os.endianness();

Return result:

• String, Return byte order

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type

Query the operating system name of the current running environment

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static String os.type();

Return result:

• String, Returns the system name

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release

Query the operating system version of the current operating environment

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static String os.release();

Return result:

• String, Return version information

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homedir

Query the current user directory

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static String os.homedir();

Return result:

• String, Return directory string

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arch

Query the current cpu environment

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static String os.arch();

Return result:

• String, Returns the cpu type, possible results are'amd64','arm','arm64','ia32'

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loadavg

Query the operating environment for 1 minute, 5 minutes, 15 minutes average load

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static Array os.loadavg();

Return result:

• Array, Returns an array containing three load data

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totalmem

Query the total memory of the operating environment, in bytes

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static Long os.totalmem();

Return result:

• Long, Return memory data

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freemem

Query the available memory of the operating environment, in bytes

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static Long os.freemem();

Return result:

• Long, Return memory data

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cpus

Query the number and parameters of the current operating environment cpu

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static Array os.cpus();

Return result:

• Array, Returns an array containing cpu parameters, each item corresponds to a cpu

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cpuNumbers

Query the number of CPUs in the current operating environment

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static Integer os.cpuNumbers();

Return result:

• Integer, Returns the number of cpu

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tmpdir

Query the temporary file directory of the current operating environment

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static String os.tmpdir();

Return result:

• String, Return to the temporary file directory

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userInfo

Return the current effective user information

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static Object os.userInfo(Object options = {});

Call parameters:

• options: Object, the character encoding used to interpret the result string

Return result:

• Object, Current effective execution user information

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networkInterfaces

Query current operating environment network information

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static Object os.networkInterfaces();

Return result:

• Object, Return network card information

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printerInfo

Query the printer information of the current host

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static Array os.printerInfo();

Return result:

• Array, Return printer information

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openPrinter

Create a printer output object

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static BufferedStream os.openPrinter(String name) async;

Call parameters:

• name: String, printer name

Return result:

• BufferedStream, Returns the printer output object

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platform

Query the current platform name

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static String os.platform();

Return result:

• String, Returns the platform name, possible results are'darwin','freebsd','linux', or'win32'

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time

Parse the time string or query the current time of the runtime environment

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static Date os.time(String tmString = "");

Call parameters:

• tmString: String, time string, the current time is queried by default

Return result:

• Date, Returns the javascript Date object

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dateAdd

Time calculation function, specify calculation time according to part

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static Date os.dateAdd(Date d,
    Integer num,
    String part);

Call parameters:

• d: Date, specifies the Date object used to calculate
• num: Integer, specify the value of the operation
• part: String, specify the time part of the operation, the received values ​​are: "year", "month", "day", "hour", "minute", "second"

Return result:

• Date, Returns the javascript Date object

Static properties

timezone

Integer, query the current time zone of the operating environment

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static readonly Integer os.timezone;

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EOL

String, query the end-of-line identifier of the current operating environment, posix:\"\n\"; windows:\"\r\n\"

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static readonly String os.EOL;