Node.js os.arch() Method Last Updated : 13 Oct, 2021 Comments Improve Suggest changes Like Article Like Report The os.arch() method is an inbuilt application programming interface of the os module which is used to get CPU architecture of the computer for which the current node.js is compiled. Syntax: os.arch() Parameters: This method does not accept any parameters. Return Value: This method returns the operating system CPU architecture for which the current node.js is compiled for. Possible values are 'x32', 'x64', 'arm', 'arm64', 's390', 's390x', 'mipsel', 'ia32', 'mips', 'ppc' and 'ppc64'. Below examples illustrate the use of os.arch() method in Node.js: Example 1: javascript // Node.js program to demonstrate the // os.arch() method // Allocating os module const os = require('os'); // Printing os.arch() console.log(os.arch()); Output: x64 Example 2: javascript <script> // Node.js program to demonstrate the // os.arch() method // Allocating os module const os = require('os'); // Printing os.arch() description // of the architecture switch(os.arch()){ case 'x32': console.log("32-bit extended system"); break; case 'x64': console.log("64-bit extended system"); break; case 'arm': console.log("32-bit Advanced RISC Machine"); break; case 'arm64': console.log("64-bit Advanced RISC Machine"); break; case 's390': console.log("31-bit The IBM System/390, the" + " third generation of the System/360" + " instruction set architecture"); break; case 's390x': console.log("64-bit The IBM System/390, the" + " third generation of the System/360" + " instruction set architecture"); break; case 'mipsel': console.log("64-bit Microprocessor without" + " Interlocked Pipelined Stages"); break; case 'mips': console.log("32-bit Microprocessor without" + " Interlocked Pipelined Stages"); break; case 'ia32': console.log("32-bit Intel Architecture"); break; case 'ppc': console.log("PowerPC Architecture."); break; case 'ppc64': console.log("64-bit PowerPC Architecture."); break; default: console.log(" unknown processor"); } </script> Output: 64-bit extended system Note: The above program will compile and run by using the node index.js command. Reference: https://nodejs.org/api/os.html#os_os_arch Comment More infoAdvertise with us Next Article Node.js os.cpus() Method G gekcho Follow Improve Article Tags : Web Technologies Node.js Node.js-os-module Similar Reads Node.js os.EOL The os.EOL constant is an inbuilt application programming interface of the os module which is used to get end-of-line character or marker as specified by the operating system. Syntax: os.EOL Return Value: It returns the EOL (end-of-line marker) as specified by the operating system on which it is run 2 min read Node.js os.arch() Method The os.arch() method is an inbuilt application programming interface of the os module which is used to get CPU architecture of the computer for which the current node.js is compiled. Syntax: os.arch() Parameters: This method does not accept any parameters. 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