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NodeJS modules की list में अगला important module है os . os module कई ऐसे functions provide करता है , जिनका use system की information get करने के लिए किया जाता है।
os module को print कराकर आप सभी useful functions और properties के बारे में जान सकते हैं।बाकी कुछ useful functions examples के साथ नीचे दिखाए गए हैं।
यह function machine का architecture like arm, x64, arm64 के बारे में बताता है।
console.log(require('os').arch());
//Output : x64यह operating system का type return करता है।
console.log(require('os').type());
//Output : Windows_NT
यह function आपके machine में available CPUs के बारे में बताता है।
console.log(require('os').arch());C:\Users\HP\Desktop\workspace\nodejs>node app.js
[
{
model: 'Intel(R) Core(TM) i5-3340M CPU @ 2.70GHz',
speed: 2691,
times: {
user: 1305953,
nice: 0,
sys: 1306750,
idle: 25623828,
irq: 181046
}
},
{
model: 'Intel(R) Core(TM) i5-3340M CPU @ 2.70GHz',
speed: 2691,
times: { user: 1097953, nice: 0, sys: 650656, idle: 26487734, irq: 12421 }
},
{
model: 'Intel(R) Core(TM) i5-3340M CPU @ 2.70GHz',
speed: 2691,
times: { user: 1349578, nice: 0, sys: 952781, idle: 25933984, irq: 20343 }
},
{
model: 'Intel(R) Core(TM) i5-3340M CPU @ 2.70GHz',
speed: 2691,
times: { user: 1210218, nice: 0, sys: 653687, idle: 26372453, irq: 8062 }
}
]
यह function आपके system में available free memory को bytes में बताता है।
console.log(require('os').freemem());
//Output : 647602176यह function आपके system में available total memory को bytes में बताता है।
console.log(require('os').totalmem());
//Output : 4193673216
यह function आपके system पर available सभी network interfaces की details बताता है।
console.log(require('os').networkInterfaces());C:\Users\HP\Desktop\workspace\nodejs>node app.js
{
'Wi-Fi 2': [
{
address: '2409:4052:e08:bf88:4941:c502:32a2:8444',
netmask: 'ffff:ffff:ffff:ffff::',
family: 'IPv6',
mac: 'e0:9d:31:2a:ca:20',
internal: false,
cidr: '2409:4052:e08:bf88:4941:c502:32a2:8444/64',
scopeid: 0
},
{
address: '2409:4052:e08:bf88:38be:8e61:ea3b:1cad',
netmask: 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
family: 'IPv6',
mac: 'e0:9d:31:2a:ca:20',
internal: false,
cidr: '2409:4052:e08:bf88:38be:8e61:ea3b:1cad/128',
scopeid: 0
},
{
address: 'fe80::4941:c502:32a2:8444',
netmask: 'ffff:ffff:ffff:ffff::',
family: 'IPv6',
mac: 'e0:9d:31:2a:ca:20',
internal: false,
cidr: 'fe80::4941:c502:32a2:8444/64',
scopeid: 3
},
{
address: '192.168.246.194',
netmask: '255.255.255.0',
family: 'IPv4',
mac: 'e0:9d:31:2a:ca:20',
internal: false,
cidr: '192.168.246.194/24'
}
],
'Loopback Pseudo-Interface 1': [
{
address: '::1',
netmask: 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
family: 'IPv6',
mac: '00:00:00:00:00:00',
internal: true,
cidr: '::1/128',
scopeid: 0
},
{
address: '127.0.0.1',
netmask: '255.0.0.0',
family: 'IPv4',
mac: '00:00:00:00:00:00',
internal: true,
cidr: '127.0.0.1/8'
}
]
}
यह operating system का release number string करता है।
console.log(require('os').release());
//Output : 10.0.19042यह current user के info return करता है।
console.log(require('os').userInfo());
//Output :
{
uid: -1,
gid: -1,
username: 'HP',
homedir: 'C:\\Users\\HP',
shell: null
}